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Posted to commits@kafka.apache.org by gw...@apache.org on 2015/08/27 20:58:53 UTC
[3/5] kafka git commit: KAFKA-2367; Add Copycat runtime data API.
http://git-wip-us.apache.org/repos/asf/kafka/blob/492bfdfa/copycat/data/src/main/java/org/apache/kafka/copycat/data/SchemaBuilder.java
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diff --git a/copycat/data/src/main/java/org/apache/kafka/copycat/data/SchemaBuilder.java b/copycat/data/src/main/java/org/apache/kafka/copycat/data/SchemaBuilder.java
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-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- **/
-
-
-
-package org.apache.kafka.copycat.data;
-
-import org.apache.kafka.copycat.data.Schema.Field;
-
-import java.nio.ByteBuffer;
-import java.util.*;
-
-/**
- * <p>
- * A fluent interface for building {@link Schema} instances. The flow of the API
- * is designed to mimic the <a
- * href="http://avro.apache.org/docs/current/spec.html#schemas">Avro Schema
- * Specification</a>
- * </p>
- * For example, the below JSON schema and the fluent builder code to create it
- * are very similar:
- *
- * <pre>
- * {
- * "type": "record",
- * "name": "HandshakeRequest", "namespace":"org.apache.avro.ipc",
- * "fields": [
- * {"name": "clientHash",
- * "type": {"type": "fixed", "name": "MD5", "size": 16}},
- * {"name": "clientProtocol", "type": ["null", "string"]},
- * {"name": "serverHash", "type": "MD5"},
- * {"name": "meta", "type": ["null", {"type": "map", "values": "bytes"}]}
- * ]
- * }
- * </pre>
- *
- * <pre>
- * Schema schema = SchemaBuilder
- * .record("HandshakeRequest").namespace("org.apache.avro.ipc)
- * .fields()
- * .name("clientHash").type().fixed("MD5").size(16).noDefault()
- * .name("clientProtocol").type().nullable().stringType().noDefault()
- * .name("serverHash").type("MD5")
- * .name("meta").type().nullable().map().values().bytesType().noDefault()
- * .endRecord();
- * </pre>
- * <p/>
- *
- * <h5>Usage Guide</h5>
- * SchemaBuilder chains together many smaller builders and maintains nested
- * context in order to mimic the Avro Schema specification. Every Avro type in
- * JSON has required and optional JSON properties, as well as user-defined
- * properties.
- * <p/>
- * <h6>Selecting and Building an Avro Type</h6>
- * The API analogy for the right hand side of the Avro Schema JSON
- * <pre>
- * "type":
- * </pre>
- * is a {@link TypeBuilder}, {@link FieldTypeBuilder}, or
- * {@link UnionFieldTypeBuilder}, depending on the context. These types all
- * share a similar API for selecting and building types.
- * <p/>
- * <h5>Primitive Types</h5>
- * All Avro primitive types are trivial to configure. A primitive type in
- * Avro JSON can be declared two ways, one that supports custom properties
- * and one that does not:
- * <pre>
- * {"type":"int"}
- * {"type":{"name":"int"}}
- * {"type":{"name":"int", "customProp":"val"}}
- * </pre>
- * The analogous code form for the above three JSON lines are the below
- * three lines:
- * <pre>
- * .intType()
- * .intBuilder().endInt()
- * .intBuilder().prop("customProp", "val").endInt()
- * </pre>
- * Every primitive type has a shortcut to create the trivial type, and
- * a builder when custom properties are required. The first line above is
- * a shortcut for the second, analogous to the JSON case.
- * <h6>Named Types</h6>
- * Avro named types have names, namespace, aliases, and doc. In this API
- * these share a common parent, {@link NamespacedBuilder}.
- * The builders for named types require a name to be constructed, and optional
- * configuration via:
- * <li>{@link NamespacedBuilder#doc()}</li>
- * <li>{@link NamespacedBuilder#namespace(String)}</li>
- * <li>{@link NamespacedBuilder#aliases(String...)}</li>
- * <li>{@link PropBuilder#prop(String, Object)}</li>
- * <p/>
- * Each named type completes configuration of the optional properties
- * with its own method:
- * <li>{@link FixedBuilder#size(int)}</li>
- * <li>{@link EnumBuilder#symbols(String...)}</li>
- * <li>{@link RecordBuilder#fields()}</li>
- * Example use of a named type with all optional parameters:
- * <pre>
- * .enumeration("Suit").namespace("org.apache.test")
- * .aliases("org.apache.test.OldSuit")
- * .doc("CardSuits")
- * .prop("customProp", "val")
- * .symbols("SPADES", "HEARTS", "DIAMONDS", "CLUBS")
- * </pre>
- * Which is equivalent to the JSON:
- * <pre>
- * { "type":"enum",
- * "name":"Suit", "namespace":"org.apache.test",
- * "aliases":["org.apache.test.OldSuit"],
- * "doc":"Card Suits",
- * "customProp":"val",
- * "symbols":["SPADES", "HEARTS", "DIAMONDS", "CLUBS"]
- * }
- * </pre>
- * <h6>Nested Types</h6>
- * The Avro nested types, map and array, can have custom properties like
- * all avro types, are not named, and must specify a nested type.
- * After configuration of optional properties, an array or map
- * builds or selects its nested type with {@link ArrayBuilder#items()}
- * and {@link MapBuilder#values()}, respectively.
- *
- * <h6>Fields</h6>
- * {@link RecordBuilder#fields()} returns a {@link FieldAssembler} for
- * defining the fields of the record and completing it.
- * Each field must have a name, specified via {@link FieldAssembler#name(String)},
- * which returns a {@link FieldBuilder} for defining aliases, custom properties,
- * and documentation of the field. After configuring these optional values for
- * a field, the type is selected or built with {@link FieldBuilder#type()}.
- * <p/>
- * Fields have default values that must be specified to complete the field.
- * {@link FieldDefault#noDefault()} is available for all field types, and
- * a specific method is available for each type to use a default, for example
- * {@link IntDefault#intDefault(int)}
- * <p/>
- * There are field shortcut methods on {@link FieldAssembler} for primitive types.
- * These shortcuts create required, optional, and nullable fields, but do not
- * support field aliases, doc, or custom properties.
- *
- * <h6>Unions</h6>
- * Union types are built via {@link TypeBuilder#unionOf()} or
- * {@link FieldTypeBuilder#unionOf()} in the context of type selection.
- * This chains together multiple types, in union order. For example:
- * <pre>
- * .unionOf()
- * .fixed("IPv4").size(4).and()
- * .fixed("IPv6").size(16).and()
- * .nullType().endUnion()
- * </pre>
- * is equivalent to the Avro schema JSON:
- * <pre>
- * [
- * {"type":"fixed", "name":"IPv4", "size":4},
- * {"type":"fixed", "name":"IPv6", "size":16},
- * "null"
- * ]
- * </pre>
- * In a field context, the first type of a union defines what default type
- * is allowed.
- * </p>
- * Unions have two shortcuts for common cases. nullable()
- * creates a union of a type and null. In a field type context, optional()
- * is available and creates a union of null and a type, with a null default.
- * The below two are equivalent:
- * <pre>
- * .unionOf().intType().and().nullType().endUnion()
- * .nullable().intType()
- * </pre>
- * The below two field declarations are equivalent:
- * <pre>
- * .name("f").type().unionOf().nullType().and().longType().endUnion().nullDefault()
- * .name("f").type().optional().longType()
- * </pre>
- *
- * <h6>Explicit Types and Types by Name</h6>
- * Types can also be specified explicitly by passing in a Schema, or by name:
- * <pre>
- * .type(Schema.create(Schema.Type.INT)) // explicitly specified
- * .type("MD5") // reference by full name or short name
- * .type("MD5", "org.apache.avro.test") // reference by name and namespace
- * </pre>
- * When a type is specified by name, and the namespace is absent or null, the
- * namespace is inherited from the enclosing context. A namespace will
- * propagate as a default to child fields, nested types, or later defined types
- * in a union. To specify a name that has no namespace and ignore the inherited
- * namespace, set the namespace to "".
- * <p/>
- * {@link SchemaBuilder#builder(String)} returns a type builder with a default
- * namespace. {@link SchemaBuilder#builder()} returns a type builder with no
- * default namespace.
- */
-public class SchemaBuilder {
-
- private SchemaBuilder() {
- }
-
- /**
- * Create a builder for Avro schemas.
- */
- public static TypeBuilder<Schema> builder() {
- return new TypeBuilder<Schema>(new SchemaCompletion(), new NameContext());
- }
-
- /**
- * Create a builder for Avro schemas with a default namespace. Types created
- * without namespaces will inherit the namespace provided.
- */
- public static TypeBuilder<Schema> builder(String namespace) {
- return new TypeBuilder<Schema>(new SchemaCompletion(),
- new NameContext().namespace(namespace));
- }
-
- /**
- * Create a builder for an Avro enum with the specified name and symbols (values).
- * This is equivalent to:
- * <pre>
- * builder().enumeration(name);
- * </pre>
- * @param name the enum name
- */
- public static EnumBuilder<Schema> enumeration(String name) {
- return builder().enumeration(name);
- }
-
- /**
- * Create a builder for an Avro array
- * This is equivalent to:
- * <pre>
- * builder().array();
- * </pre>
- */
- public static ArrayBuilder<Schema> array() {
- return builder().array();
- }
-
- /**
- * Create a builder for an Avro map
- * This is equivalent to:
- * <pre>
- * builder().map();
- * </pre>
- */
- public static MapBuilder<Schema> map() {
- return builder().map();
- }
-
- /**
- * Create a builder for an Avro union
- * This is equivalent to:
- * <pre>
- * builder().unionOf();
- * </pre>
- */
- public static BaseTypeBuilder<UnionAccumulator<Schema>> unionOf() {
- return builder().unionOf();
- }
-
- /**
- * Create a builder for a union of a type and null.
- * This is a shortcut for:
- * <pre>
- * builder().nullable();
- * </pre>
- * and the following two lines are equivalent:
- * <pre>
- * nullable().intType();
- * </pre>
- * <pre>
- * unionOf().intType().and().nullType().endUnion();
- * </pre>
- */
- public static BaseTypeBuilder<Schema> nullable() {
- return builder().nullable();
- }
-
-
- /**
- * An abstract builder for all Avro types. All Avro types
- * can have arbitrary string key-value properties.
- */
- public static abstract class PropBuilder<S extends PropBuilder<S>> {
- private Map<String, Object> props = null;
-
- protected PropBuilder() {
- }
-
- public final S prop(String name, Object val) {
- if (!hasProps()) {
- props = new HashMap<String, Object>();
- }
- props.put(name, val);
- return self();
- }
-
- private boolean hasProps() {
- return (props != null);
- }
-
- final <T extends ObjectProperties> T addPropsTo(T jsonable) {
- if (hasProps()) {
- for (Map.Entry<String, Object> prop : props.entrySet()) {
- jsonable.addProp(prop.getKey(), prop.getValue());
- }
- }
- return jsonable;
- }
-
- /** a self-type for chaining builder subclasses. Concrete subclasses
- * must return 'this' **/
- protected abstract S self();
- }
-
- /**
- * An abstract type that provides builder methods for configuring the name,
- * doc, and aliases of all Avro types that have names (fields, Fixed, Record,
- * and Enum).
- * <p/>
- * All Avro named types and fields have 'doc', 'aliases', and 'name'
- * components. 'name' is required, and provided to this builder. 'doc' and
- * 'alises' are optional.
- */
- public static abstract class NamedBuilder<S extends NamedBuilder<S>> extends
- PropBuilder<S> {
- private final String name;
- private final NameContext names;
- private String doc;
- private String[] aliases;
-
- protected NamedBuilder(NameContext names, String name) {
- checkRequired(name, "Type must have a name");
- this.names = names;
- this.name = name;
- }
-
- /** configure this type's optional documentation string **/
- public final S doc(String doc) {
- this.doc = doc;
- return self();
- }
-
- /** configure this type's optional name aliases **/
- public final S aliases(String... aliases) {
- this.aliases = aliases;
- return self();
- }
-
- final String doc() {
- return doc;
- }
-
- final String name() {
- return name;
- }
-
- final NameContext names() {
- return names;
- }
-
- final Schema addAliasesTo(Schema schema) {
- if (null != aliases) {
- for (String alias : aliases) {
- schema.addAlias(alias);
- }
- }
- return schema;
- }
-
- final Field addAliasesTo(Field field) {
- if (null != aliases) {
- for (String alias : aliases) {
- field.addAlias(alias);
- }
- }
- return field;
- }
- }
-
- /**
- * An abstract type that provides builder methods for configuring the
- * namespace for all Avro types that have namespaces (Fixed, Record, and
- * Enum).
- */
- public static abstract class NamespacedBuilder<R, S extends NamespacedBuilder<R, S>>
- extends NamedBuilder<S> {
- private final Completion<R> context;
- private String namespace;
-
- protected NamespacedBuilder(Completion<R> context, NameContext names,
- String name) {
- super(names, name);
- this.context = context;
- }
-
- /**
- * Set the namespace of this type. To clear the namespace, set empty string.
- * <p/>
- * When the namespace is null or unset, the namespace of the type defaults
- * to the namespace of the enclosing context.
- **/
- public final S namespace(String namespace) {
- this.namespace = namespace;
- return self();
- }
-
- final String space() {
- if (null == namespace) {
- return names().namespace;
- }
- return namespace;
- }
-
- final Schema completeSchema(Schema schema) {
- addPropsTo(schema);
- addAliasesTo(schema);
- names().put(schema);
- return schema;
- }
-
- final Completion<R> context() {
- return context;
- }
- }
-
- /**
- * An abstraction for sharing code amongst all primitive type builders.
- */
- private static abstract class PrimitiveBuilder<R, P extends PrimitiveBuilder<R, P>>
- extends PropBuilder<P> {
- private final Completion<R> context;
- private final Schema immutable;
-
- protected PrimitiveBuilder(Completion<R> context, NameContext names,
- Schema.Type type) {
- this.context = context;
- this.immutable = names.getFullname(type.getName());
- }
-
- private R end() {
- Schema schema = immutable;
- if (super.hasProps()) {
- schema = Schema.create(immutable.getType());
- addPropsTo(schema);
- }
- return context.complete(schema);
- }
- }
-
- /**
- * Builds an Avro boolean type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endBoolean()}
- **/
- public static final class BooleanBuilder<R> extends
- PrimitiveBuilder<R, BooleanBuilder<R>> {
- private BooleanBuilder(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.BOOLEAN);
- }
-
- private static <R> BooleanBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new BooleanBuilder<R>(context, names);
- }
-
- @Override
- protected BooleanBuilder<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endBoolean() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro int type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endInt()}
- **/
- public static final class IntBuilder<R> extends
- PrimitiveBuilder<R, IntBuilder<R>> {
- private IntBuilder(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.INT);
- }
-
- private static <R> IntBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new IntBuilder<R>(context, names);
- }
-
- @Override
- protected IntBuilder<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endInt() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro long type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endLong()}
- **/
- public static final class LongBuilder<R> extends
- PrimitiveBuilder<R, LongBuilder<R>> {
- private LongBuilder(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.LONG);
- }
-
- private static <R> LongBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new LongBuilder<R>(context, names);
- }
-
- @Override
- protected LongBuilder<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endLong() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro float type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endFloat()}
- **/
- public static final class FloatBuilder<R> extends
- PrimitiveBuilder<R, FloatBuilder<R>> {
- private FloatBuilder(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.FLOAT);
- }
-
- private static <R> FloatBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new FloatBuilder<R>(context, names);
- }
-
- @Override
- protected FloatBuilder<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endFloat() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro double type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endDouble()}
- **/
- public static final class DoubleBuilder<R> extends
- PrimitiveBuilder<R, DoubleBuilder<R>> {
- private DoubleBuilder(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.DOUBLE);
- }
-
- private static <R> DoubleBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new DoubleBuilder<R>(context, names);
- }
-
- @Override
- protected DoubleBuilder<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endDouble() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro string type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endString()}
- **/
- public static final class StringBldr<R> extends
- PrimitiveBuilder<R, StringBldr<R>> {
- private StringBldr(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.STRING);
- }
-
- private static <R> StringBldr<R> create(Completion<R> context,
- NameContext names) {
- return new StringBldr<R>(context, names);
- }
-
- @Override
- protected StringBldr<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endString() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro bytes type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endBytes()}
- **/
- public static final class BytesBuilder<R> extends
- PrimitiveBuilder<R, BytesBuilder<R>> {
- private BytesBuilder(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.BYTES);
- }
-
- private static <R> BytesBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new BytesBuilder<R>(context, names);
- }
-
- @Override
- protected BytesBuilder<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endBytes() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro null type with optional properties. Set properties with
- * {@link #prop(String, Object)}, and finalize with {@link #endNull()}
- **/
- public static final class NullBuilder<R> extends
- PrimitiveBuilder<R, NullBuilder<R>> {
- private NullBuilder(Completion<R> context, NameContext names) {
- super(context, names, Schema.Type.NULL);
- }
-
- private static <R> NullBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new NullBuilder<R>(context, names);
- }
-
- @Override
- protected NullBuilder<R> self() {
- return this;
- }
-
- /** complete building this type, return control to context **/
- public R endNull() {
- return super.end();
- }
- }
-
- /**
- * Builds an Avro Enum type with optional properties, namespace, doc, and
- * aliases.
- * <p/>
- * Set properties with {@link #prop(String, Object)}, namespace with
- * {@link #namespace(String)}, doc with {@link #doc(String)}, and aliases with
- * {@link #aliases(String[])}.
- * <p/>
- * The Enum schema is finalized when its required symbols are set via
- * {@link #symbols(String[])}.
- **/
- public static final class EnumBuilder<R> extends
- NamespacedBuilder<R, EnumBuilder<R>> {
- private EnumBuilder(Completion<R> context, NameContext names, String name) {
- super(context, names, name);
- }
-
- private static <R> EnumBuilder<R> create(Completion<R> context,
- NameContext names, String name) {
- return new EnumBuilder<R>(context, names, name);
- }
-
- @Override
- protected EnumBuilder<R> self() {
- return this;
- }
-
- /** Configure this enum type's symbols, and end its configuration. **/
- public R symbols(String... symbols) {
- Schema schema = Schema.createEnum(name(), doc(), space(),
- Arrays.asList(symbols));
- completeSchema(schema);
- return context().complete(schema);
- }
-
- }
-
- /**
- * Builds an Avro Map type with optional properties.
- * <p/>
- * Set properties with {@link #prop(String, Object)}.
- * <p/>
- * The Map schema's properties are finalized when {@link #values()} or
- * {@link #values(Schema)} is called.
- **/
- public static final class MapBuilder<R> extends PropBuilder<MapBuilder<R>> {
- private final Completion<R> context;
- private final NameContext names;
-
- private MapBuilder(Completion<R> context, NameContext names) {
- this.context = context;
- this.names = names;
- }
-
- private static <R> MapBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new MapBuilder<R>(context, names);
- }
-
- @Override
- protected MapBuilder<R> self() {
- return this;
- }
-
- /**
- * Return a type builder for configuring the map's nested values schema.
- * This builder will return control to the map's enclosing context when
- * complete.
- **/
- public TypeBuilder<R> values() {
- return new TypeBuilder<R>(new MapCompletion<R>(this, context), names);
- }
-
- /**
- * Complete configuration of this map, setting the schema of the map values
- * to the schema provided. Returns control to the enclosing context.
- **/
- public R values(Schema valueSchema) {
- return new MapCompletion<R>(this, context).complete(valueSchema);
- }
- }
-
- /**
- * Builds an Avro Array type with optional properties.
- * <p/>
- * Set properties with {@link #prop(String, Object)}.
- * <p/>
- * The Array schema's properties are finalized when {@link #items()} or
- * {@link #items(Schema)} is called.
- **/
- public static final class ArrayBuilder<R> extends
- PropBuilder<ArrayBuilder<R>> {
- private final Completion<R> context;
- private final NameContext names;
-
- public ArrayBuilder(Completion<R> context, NameContext names) {
- this.context = context;
- this.names = names;
- }
-
- private static <R> ArrayBuilder<R> create(Completion<R> context,
- NameContext names) {
- return new ArrayBuilder<R>(context, names);
- }
-
- @Override
- protected ArrayBuilder<R> self() {
- return this;
- }
-
- /**
- * Return a type builder for configuring the array's nested items schema.
- * This builder will return control to the array's enclosing context when
- * complete.
- **/
- public TypeBuilder<R> items() {
- return new TypeBuilder<R>(new ArrayCompletion<R>(this, context), names);
- }
-
- /**
- * Complete configuration of this array, setting the schema of the array
- * items to the schema provided. Returns control to the enclosing context.
- **/
- public R items(Schema itemsSchema) {
- return new ArrayCompletion<R>(this, context).complete(itemsSchema);
- }
- }
-
- /**
- * internal class for passing the naming context around. This allows for the
- * following:
- * <li>Cache and re-use primitive schemas when they do not set
- * properties.</li>
- * <li>Provide a default namespace for nested contexts (as
- * the JSON Schema spec does).</li>
- * <li>Allow previously defined named types or primitive types
- * to be referenced by name.</li>
- **/
- private static class NameContext {
- private static final Set<String> PRIMITIVES = new HashSet<String>();
-
- {
- PRIMITIVES.add("null");
- PRIMITIVES.add("boolean");
- PRIMITIVES.add("int");
- PRIMITIVES.add("long");
- PRIMITIVES.add("float");
- PRIMITIVES.add("double");
- PRIMITIVES.add("bytes");
- PRIMITIVES.add("string");
- }
-
- private final HashMap<String, Schema> schemas;
- private final String namespace;
-
- private NameContext() {
- this.schemas = new HashMap<String, Schema>();
- this.namespace = null;
- schemas.put("null", Schema.create(Schema.Type.NULL));
- schemas.put("boolean", Schema.create(Schema.Type.BOOLEAN));
- schemas.put("int", Schema.create(Schema.Type.INT));
- schemas.put("long", Schema.create(Schema.Type.LONG));
- schemas.put("float", Schema.create(Schema.Type.FLOAT));
- schemas.put("double", Schema.create(Schema.Type.DOUBLE));
- schemas.put("bytes", Schema.create(Schema.Type.BYTES));
- schemas.put("string", Schema.create(Schema.Type.STRING));
- }
-
- private NameContext(HashMap<String, Schema> schemas, String namespace) {
- this.schemas = schemas;
- this.namespace = "".equals(namespace) ? null : namespace;
- }
-
- private NameContext namespace(String namespace) {
- return new NameContext(schemas, namespace);
- }
-
- private Schema get(String name, String namespace) {
- return getFullname(resolveName(name, namespace));
- }
-
- private Schema getFullname(String fullName) {
- Schema schema = schemas.get(fullName);
- if (schema == null) {
- throw new SchemaParseException("Undefined name: " + fullName);
- }
- return schema;
- }
-
- private void put(Schema schema) {
- String fullName = schema.getFullName();
- if (schemas.containsKey(fullName)) {
- throw new SchemaParseException("Can't redefine: " + fullName);
- }
- schemas.put(fullName, schema);
- }
-
- private String resolveName(String name, String space) {
- if (PRIMITIVES.contains(name) && space == null) {
- return name;
- }
- int lastDot = name.lastIndexOf('.');
- if (lastDot < 0) { // short name
- if (space == null) {
- space = namespace;
- }
- if (space != null && !"".equals(space)) {
- return space + "." + name;
- }
- }
- return name;
- }
- }
-
- /**
- * A common API for building types within a context. BaseTypeBuilder can build
- * all types other than Unions. {@link TypeBuilder} can additionally build
- * Unions.
- * <p/>
- * The builder has two contexts:
- * <li>A naming context provides a default namespace and allows for previously
- * defined named types to be referenced from {@link #type(String)}</li>
- * <li>A completion context representing the scope that the builder was
- * created in. A builder created in a nested context (for example,
- * {@link MapBuilder#values()} will have a completion context assigned by the
- * {@link MapBuilder}</li>
- **/
- public static class BaseTypeBuilder<R> {
- private final Completion<R> context;
- private final NameContext names;
-
- private BaseTypeBuilder(Completion<R> context, NameContext names) {
- this.context = context;
- this.names = names;
- }
-
- /** Use the schema provided as the type. **/
- public final R type(Schema schema) {
- return context.complete(schema);
- }
-
- /**
- * Look up the type by name. This type must be previously defined in the
- * context of this builder.
- * <p/>
- * The name may be fully qualified or a short name. If it is a short name,
- * the default namespace of the current context will additionally be
- * searched.
- **/
- public final R type(String name) {
- return type(name, null);
- }
-
- /**
- * Look up the type by name and namespace. This type must be previously
- * defined in the context of this builder.
- * <p/>
- * The name may be fully qualified or a short name. If it is a fully
- * qualified name, the namespace provided is ignored. If it is a short name,
- * the namespace provided is used if not null, else the default namespace of
- * the current context will be used.
- **/
- public final R type(String name, String namespace) {
- return type(names.get(name, namespace));
- }
-
- /**
- * A plain boolean type without custom properties. This is equivalent to:
- * <pre>
- * booleanBuilder().endBoolean();
- * </pre>
- */
- public final R booleanType() {
- return booleanBuilder().endBoolean();
- }
-
- /**
- * Build a boolean type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #booleanType()}.
- */
- public final BooleanBuilder<R> booleanBuilder() {
- return BooleanBuilder.create(context, names);
- }
-
- /**
- * A plain int type without custom properties. This is equivalent to:
- * <pre>
- * intBuilder().endInt();
- * </pre>
- */
- public final R intType() {
- return intBuilder().endInt();
- }
-
- /**
- * Build an int type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #intType()}.
- */
- public final IntBuilder<R> intBuilder() {
- return IntBuilder.create(context, names);
- }
-
- /**
- * A plain long type without custom properties. This is equivalent to:
- * <pre>
- * longBuilder().endLong();
- * </pre>
- */
- public final R longType() {
- return longBuilder().endLong();
- }
-
- /**
- * Build a long type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #longType()}.
- */
- public final LongBuilder<R> longBuilder() {
- return LongBuilder.create(context, names);
- }
-
- /**
- * A plain float type without custom properties. This is equivalent to:
- * <pre>
- * floatBuilder().endFloat();
- * </pre>
- */
- public final R floatType() {
- return floatBuilder().endFloat();
- }
-
- /**
- * Build a float type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #floatType()}.
- */
- public final FloatBuilder<R> floatBuilder() {
- return FloatBuilder.create(context, names);
- }
-
- /**
- * A plain double type without custom properties. This is equivalent to:
- * <pre>
- * doubleBuilder().endDouble();
- * </pre>
- */
- public final R doubleType() {
- return doubleBuilder().endDouble();
- }
-
- /**
- * Build a double type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #doubleType()}.
- */
- public final DoubleBuilder<R> doubleBuilder() {
- return DoubleBuilder.create(context, names);
- }
-
- /**
- * A plain string type without custom properties. This is equivalent to:
- * <pre>
- * stringBuilder().endString();
- * </pre>
- */
- public final R stringType() {
- return stringBuilder().endString();
- }
-
- /**
- * Build a string type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #stringType()}.
- */
- public final StringBldr<R> stringBuilder() {
- return StringBldr.create(context, names);
- }
-
- /**
- * A plain bytes type without custom properties. This is equivalent to:
- * <pre>
- * bytesBuilder().endBytes();
- * </pre>
- */
- public final R bytesType() {
- return bytesBuilder().endBytes();
- }
-
- /**
- * Build a bytes type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #bytesType()}.
- */
- public final BytesBuilder<R> bytesBuilder() {
- return BytesBuilder.create(context, names);
- }
-
- /**
- * A plain null type without custom properties. This is equivalent to:
- * <pre>
- * nullBuilder().endNull();
- * </pre>
- */
- public final R nullType() {
- return nullBuilder().endNull();
- }
-
- /**
- * Build a null type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #nullType()}.
- */
- public final NullBuilder<R> nullBuilder() {
- return NullBuilder.create(context, names);
- }
-
- /** Build an Avro map type Example usage:
- * <pre>
- * map().values().intType()
- * </pre>
- * Equivalent to Avro JSON Schema:
- * <pre>
- * {"type":"map", "values":"int"}
- * </pre>
- **/
- public final MapBuilder<R> map() {
- return MapBuilder.create(context, names);
- }
-
- /** Build an Avro array type Example usage:
- * <pre>
- * array().items().longType()
- * </pre>
- * Equivalent to Avro JSON Schema:
- * <pre>
- * {"type":"array", "values":"long"}
- * </pre>
- **/
- public final ArrayBuilder<R> array() {
- return ArrayBuilder.create(context, names);
- }
-
- /** Build an Avro enum type. Example usage:
- * <pre>
- * enumeration("Suits").namespace("org.cards").doc("card suit names")
- * .symbols("HEART", "SPADE", "DIAMOND", "CLUB")
- * </pre>
- * Equivalent to Avro JSON Schema:
- * <pre>
- * {"type":"enum", "name":"Suits", "namespace":"org.cards",
- * "doc":"card suit names", "symbols":[
- * "HEART", "SPADE", "DIAMOND", "CLUB"]}
- * </pre>
- **/
- public final EnumBuilder<R> enumeration(String name) {
- return EnumBuilder.create(context, names, name);
- }
-
- /** Build an Avro union schema type. Example usage:
- * <pre>unionOf().stringType().and().bytesType().endUnion()</pre>
- **/
- protected BaseTypeBuilder<UnionAccumulator<R>> unionOf() {
- return UnionBuilder.create(context, names);
- }
-
- /** A shortcut for building a union of a type and null.
- * <p/>
- * For example, the code snippets below are equivalent:
- * <pre>nullable().booleanType()</pre>
- * <pre>unionOf().booleanType().and().nullType().endUnion()</pre>
- **/
- protected BaseTypeBuilder<R> nullable() {
- return new BaseTypeBuilder<R>(new NullableCompletion<R>(context), names);
- }
-
- }
-
- /** A Builder for creating any Avro schema type.
- **/
- public static final class TypeBuilder<R> extends BaseTypeBuilder<R> {
- private TypeBuilder(Completion<R> context, NameContext names) {
- super(context, names);
- }
-
- @Override
- public BaseTypeBuilder<UnionAccumulator<R>> unionOf() {
- return super.unionOf();
- }
-
- @Override
- public BaseTypeBuilder<R> nullable() {
- return super.nullable();
- }
- }
-
- /** A special builder for unions. Unions cannot nest unions directly **/
- private static final class UnionBuilder<R> extends
- BaseTypeBuilder<UnionAccumulator<R>> {
- private UnionBuilder(Completion<R> context, NameContext names) {
- this(context, names, new ArrayList<Schema>());
- }
-
- private static <R> UnionBuilder<R> create(Completion<R> context, NameContext names) {
- return new UnionBuilder<R>(context, names);
- }
-
- private UnionBuilder(Completion<R> context, NameContext names, List<Schema> schemas) {
- super(new UnionCompletion<R>(context, names, schemas), names);
- }
- }
-
- /**
- * A special Builder for Record fields. The API is very similar to
- * {@link BaseTypeBuilder}. However, fields have their own names, properties,
- * and default values.
- * <p/>
- * The methods on this class create builder instances that return their
- * control to the {@link FieldAssembler} of the enclosing record context after
- * configuring a default for the field.
- * <p/>
- * For example, an int field with default value 1:
- * <pre>
- * intSimple().withDefault(1);
- * </pre>
- * or an array with items that are optional int types:
- * <pre>
- * array().items().optional().intType();
- * </pre>
- */
- public static class BaseFieldTypeBuilder<R> {
- protected final FieldBuilder<R> bldr;
- protected final NameContext names;
- private final CompletionWrapper wrapper;
-
- protected BaseFieldTypeBuilder(FieldBuilder<R> bldr, CompletionWrapper wrapper) {
- this.bldr = bldr;
- this.names = bldr.names();
- this.wrapper = wrapper;
- }
-
- /**
- * A plain boolean type without custom properties. This is equivalent to:
- * <pre>
- * booleanBuilder().endBoolean();
- * </pre>
- */
- public final BooleanDefault<R> booleanType() {
- return booleanBuilder().endBoolean();
- }
-
- /**
- * Build a boolean type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #booleanType()}.
- */
- public final BooleanBuilder<BooleanDefault<R>> booleanBuilder() {
- return BooleanBuilder.create(wrap(new BooleanDefault<R>(bldr)), names);
- }
-
- /**
- * A plain int type without custom properties. This is equivalent to:
- * <pre>
- * intBuilder().endInt();
- * </pre>
- */
- public final IntDefault<R> intType() {
- return intBuilder().endInt();
- }
-
- /**
- * Build an int type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #intType()}.
- */
- public final IntBuilder<IntDefault<R>> intBuilder() {
- return IntBuilder.create(wrap(new IntDefault<R>(bldr)), names);
- }
-
- /**
- * A plain long type without custom properties. This is equivalent to:
- * <pre>
- * longBuilder().endLong();
- * </pre>
- */
- public final LongDefault<R> longType() {
- return longBuilder().endLong();
- }
-
- /**
- * Build a long type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #longType()}.
- */
- public final LongBuilder<LongDefault<R>> longBuilder() {
- return LongBuilder.create(wrap(new LongDefault<R>(bldr)), names);
- }
-
- /**
- * A plain float type without custom properties. This is equivalent to:
- * <pre>
- * floatBuilder().endFloat();
- * </pre>
- */
- public final FloatDefault<R> floatType() {
- return floatBuilder().endFloat();
- }
-
- /**
- * Build a float type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #floatType()}.
- */
- public final FloatBuilder<FloatDefault<R>> floatBuilder() {
- return FloatBuilder.create(wrap(new FloatDefault<R>(bldr)), names);
- }
-
- /**
- * A plain double type without custom properties. This is equivalent to:
- * <pre>
- * doubleBuilder().endDouble();
- * </pre>
- */
- public final DoubleDefault<R> doubleType() {
- return doubleBuilder().endDouble();
- }
-
- /**
- * Build a double type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #doubleType()}.
- */
- public final DoubleBuilder<DoubleDefault<R>> doubleBuilder() {
- return DoubleBuilder.create(wrap(new DoubleDefault<R>(bldr)), names);
- }
-
- /**
- * A plain string type without custom properties. This is equivalent to:
- * <pre>
- * stringBuilder().endString();
- * </pre>
- */
- public final StringDefault<R> stringType() {
- return stringBuilder().endString();
- }
-
- /**
- * Build a string type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #stringType()}.
- */
- public final StringBldr<StringDefault<R>> stringBuilder() {
- return StringBldr.create(wrap(new StringDefault<R>(bldr)), names);
- }
-
- /**
- * A plain bytes type without custom properties. This is equivalent to:
- * <pre>
- * bytesBuilder().endBytes();
- * </pre>
- */
- public final BytesDefault<R> bytesType() {
- return bytesBuilder().endBytes();
- }
-
- /**
- * Build a bytes type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #bytesType()}.
- */
- public final BytesBuilder<BytesDefault<R>> bytesBuilder() {
- return BytesBuilder.create(wrap(new BytesDefault<R>(bldr)), names);
- }
-
- /**
- * A plain null type without custom properties. This is equivalent to:
- * <pre>
- * nullBuilder().endNull();
- * </pre>
- */
- public final NullDefault<R> nullType() {
- return nullBuilder().endNull();
- }
-
- /**
- * Build a null type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #nullType()}.
- */
- public final NullBuilder<NullDefault<R>> nullBuilder() {
- return NullBuilder.create(wrap(new NullDefault<R>(bldr)), names);
- }
-
- /** Build an Avro map type **/
- public final MapBuilder<MapDefault<R>> map() {
- return MapBuilder.create(wrap(new MapDefault<R>(bldr)), names);
- }
-
- /** Build an Avro array type **/
- public final ArrayBuilder<ArrayDefault<R>> array() {
- return ArrayBuilder.create(wrap(new ArrayDefault<R>(bldr)), names);
- }
-
- /** Build an Avro enum type. **/
- public final EnumBuilder<EnumDefault<R>> enumeration(String name) {
- return EnumBuilder.create(wrap(new EnumDefault<R>(bldr)), names, name);
- }
-
- private <C> Completion<C> wrap(
- Completion<C> completion) {
- if (wrapper != null) {
- return wrapper.wrap(completion);
- }
- return completion;
- }
- }
-
- /** FieldTypeBuilder adds {@link #unionOf()}, {@link #nullable()}, and {@link #optional()}
- * to BaseFieldTypeBuilder. **/
- public static final class FieldTypeBuilder<R> extends BaseFieldTypeBuilder<R> {
- private FieldTypeBuilder(FieldBuilder<R> bldr) {
- super(bldr, null);
- }
-
- /** Build an Avro union schema type. **/
- public UnionFieldTypeBuilder<R> unionOf() {
- return new UnionFieldTypeBuilder<R>(bldr);
- }
-
- /**
- * A shortcut for building a union of a type and null, with an optional default
- * value of the non-null type.
- * <p/>
- * For example, the two code snippets below are equivalent:
- * <pre>nullable().booleanType().booleanDefault(true)</pre>
- * <pre>unionOf().booleanType().and().nullType().endUnion().booleanDefault(true)</pre>
- **/
- public BaseFieldTypeBuilder<R> nullable() {
- return new BaseFieldTypeBuilder<R>(bldr, new NullableCompletionWrapper());
- }
-
- /**
- * A shortcut for building a union of null and a type, with a null default.
- * <p/>
- * For example, the two code snippets below are equivalent:
- * <pre>optional().booleanType()</pre>
- * <pre>unionOf().nullType().and().booleanType().endUnion().nullDefault()</pre>
- */
- public BaseTypeBuilder<FieldAssembler<R>> optional() {
- return new BaseTypeBuilder<FieldAssembler<R>>(
- new OptionalCompletion<R>(bldr), names);
- }
- }
-
- /** Builder for a union field. The first type in the union corresponds
- * to the possible default value type.
- */
- public static final class UnionFieldTypeBuilder<R> {
- private final FieldBuilder<R> bldr;
- private final NameContext names;
-
- private UnionFieldTypeBuilder(FieldBuilder<R> bldr) {
- this.bldr = bldr;
- this.names = bldr.names();
- }
-
- /**
- * A plain boolean type without custom properties. This is equivalent to:
- * <pre>
- * booleanBuilder().endBoolean();
- * </pre>
- */
- public UnionAccumulator<BooleanDefault<R>> booleanType() {
- return booleanBuilder().endBoolean();
- }
-
- /**
- * Build a boolean type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #booleanType()}.
- */
- public BooleanBuilder<UnionAccumulator<BooleanDefault<R>>> booleanBuilder() {
- return BooleanBuilder.create(completion(new BooleanDefault<R>(bldr)), names);
- }
-
- /**
- * A plain int type without custom properties. This is equivalent to:
- * <pre>
- * intBuilder().endInt();
- * </pre>
- */
- public UnionAccumulator<IntDefault<R>> intType() {
- return intBuilder().endInt();
- }
-
- /**
- * Build an int type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #intType()}.
- */
- public IntBuilder<UnionAccumulator<IntDefault<R>>> intBuilder() {
- return IntBuilder.create(completion(new IntDefault<R>(bldr)), names);
- }
-
- /**
- * A plain long type without custom properties. This is equivalent to:
- * <pre>
- * longBuilder().endLong();
- * </pre>
- */
- public UnionAccumulator<LongDefault<R>> longType() {
- return longBuilder().endLong();
- }
-
- /**
- * Build a long type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #longType()}.
- */
- public LongBuilder<UnionAccumulator<LongDefault<R>>> longBuilder() {
- return LongBuilder.create(completion(new LongDefault<R>(bldr)), names);
- }
-
- /**
- * A plain float type without custom properties. This is equivalent to:
- * <pre>
- * floatBuilder().endFloat();
- * </pre>
- */
- public UnionAccumulator<FloatDefault<R>> floatType() {
- return floatBuilder().endFloat();
- }
-
- /**
- * Build a float type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #floatType()}.
- */
- public FloatBuilder<UnionAccumulator<FloatDefault<R>>> floatBuilder() {
- return FloatBuilder.create(completion(new FloatDefault<R>(bldr)), names);
- }
-
- /**
- * A plain double type without custom properties. This is equivalent to:
- * <pre>
- * doubleBuilder().endDouble();
- * </pre>
- */
- public UnionAccumulator<DoubleDefault<R>> doubleType() {
- return doubleBuilder().endDouble();
- }
-
- /**
- * Build a double type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #doubleType()}.
- */
- public DoubleBuilder<UnionAccumulator<DoubleDefault<R>>> doubleBuilder() {
- return DoubleBuilder.create(completion(new DoubleDefault<R>(bldr)), names);
- }
-
- /**
- * A plain string type without custom properties. This is equivalent to:
- * <pre>
- * stringBuilder().endString();
- * </pre>
- */
- public UnionAccumulator<StringDefault<R>> stringType() {
- return stringBuilder().endString();
- }
-
- /**
- * Build a string type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #stringType()}.
- */
- public StringBldr<UnionAccumulator<StringDefault<R>>> stringBuilder() {
- return StringBldr.create(completion(new StringDefault<R>(bldr)), names);
- }
-
- /**
- * A plain bytes type without custom properties. This is equivalent to:
- * <pre>
- * bytesBuilder().endBytes();
- * </pre>
- */
- public UnionAccumulator<BytesDefault<R>> bytesType() {
- return bytesBuilder().endBytes();
- }
-
- /**
- * Build a bytes type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #bytesType()}.
- */
- public BytesBuilder<UnionAccumulator<BytesDefault<R>>> bytesBuilder() {
- return BytesBuilder.create(completion(new BytesDefault<R>(bldr)), names);
- }
-
- /**
- * A plain null type without custom properties. This is equivalent to:
- * <pre>
- * nullBuilder().endNull();
- * </pre>
- */
- public UnionAccumulator<NullDefault<R>> nullType() {
- return nullBuilder().endNull();
- }
-
- /**
- * Build a null type that can set custom properties. If custom properties
- * are not needed it is simpler to use {@link #nullType()}.
- */
- public NullBuilder<UnionAccumulator<NullDefault<R>>> nullBuilder() {
- return NullBuilder.create(completion(new NullDefault<R>(bldr)), names);
- }
-
- /** Build an Avro map type **/
- public MapBuilder<UnionAccumulator<MapDefault<R>>> map() {
- return MapBuilder.create(completion(new MapDefault<R>(bldr)), names);
- }
-
- /** Build an Avro array type **/
- public ArrayBuilder<UnionAccumulator<ArrayDefault<R>>> array() {
- return ArrayBuilder.create(completion(new ArrayDefault<R>(bldr)), names);
- }
-
- /** Build an Avro enum type. **/
- public EnumBuilder<UnionAccumulator<EnumDefault<R>>> enumeration(String name) {
- return EnumBuilder.create(completion(new EnumDefault<R>(bldr)), names, name);
- }
-
- private <C> UnionCompletion<C> completion(Completion<C> context) {
- return new UnionCompletion<C>(context, names, new ArrayList<Schema>());
- }
- }
-
- public final static class FieldAssembler<R> {
- private final List<Field> fields = new ArrayList<Field>();
- private final Completion<R> context;
- private final NameContext names;
- private final Schema record;
-
- private FieldAssembler(Completion<R> context, NameContext names, Schema record) {
- this.context = context;
- this.names = names;
- this.record = record;
- }
-
- /**
- * Add a field with the given name.
- * @return A {@link FieldBuilder} for the given name.
- */
- public FieldBuilder<R> name(String fieldName) {
- return new FieldBuilder<R>(this, names, fieldName);
- }
-
- /**
- * Shortcut for creating a boolean field with the given name and no default.
- * <p/>This is equivalent to:
- * <pre>
- * name(fieldName).type().booleanType().noDefault()
- * </pre>
- */
- public FieldAssembler<R> requiredBoolean(String fieldName) {
- return name(fieldName).type().booleanType().noDefault();
- }
-
- /**
- * Shortcut for creating an optional boolean field: a union of null and
- * boolean with null default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().optional().booleanType()
- * </pre>
- */
- public FieldAssembler<R> optionalBoolean(String fieldName) {
- return name(fieldName).type().optional().booleanType();
- }
-
- /**
- * Shortcut for creating a nullable boolean field: a union of boolean and
- * null with an boolean default.
- * <p/>
- * This is equivalent to:
- *
- * <pre>
- * name(fieldName).type().nullable().booleanType().booleanDefault(defaultVal)
- * </pre>
- */
- public FieldAssembler<R> nullableBoolean(String fieldName, boolean defaultVal) {
- return name(fieldName)
- .type().nullable().booleanType().booleanDefault(defaultVal);
- }
-
- /**
- * Shortcut for creating an int field with the given name and no default.
- * <p/>This is equivalent to:
- * <pre>
- * name(fieldName).type().intType().noDefault()
- * </pre>
- */
- public FieldAssembler<R> requiredInt(String fieldName) {
- return name(fieldName).type().intType().noDefault();
- }
-
- /**
- * Shortcut for creating an optional int field: a union of null and int
- * with null default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().optional().intType()
- * </pre>
- */
- public FieldAssembler<R> optionalInt(String fieldName) {
- return name(fieldName).type().optional().intType();
- }
-
- /**
- * Shortcut for creating a nullable int field: a union of int and null
- * with an int default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().nullable().intType().intDefault(defaultVal)
- * </pre>
- */
- public FieldAssembler<R> nullableInt(String fieldName, int defaultVal) {
- return name(fieldName).type().nullable().intType().intDefault(defaultVal);
- }
-
- /**
- * Shortcut for creating a long field with the given name and no default.
- * <p/>This is equivalent to:
- * <pre>
- * name(fieldName).type().longType().noDefault()
- * </pre>
- */
- public FieldAssembler<R> requiredLong(String fieldName) {
- return name(fieldName).type().longType().noDefault();
- }
-
- /**
- * Shortcut for creating an optional long field: a union of null and long
- * with null default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().optional().longType()
- * </pre>
- */
- public FieldAssembler<R> optionalLong(String fieldName) {
- return name(fieldName).type().optional().longType();
- }
-
- /**
- * Shortcut for creating a nullable long field: a union of long and null
- * with a long default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().nullable().longType().longDefault(defaultVal)
- * </pre>
- */
- public FieldAssembler<R> nullableLong(String fieldName, long defaultVal) {
- return name(fieldName).type().nullable().longType().longDefault(defaultVal);
- }
-
- /**
- * Shortcut for creating a float field with the given name and no default.
- * <p/>This is equivalent to:
- * <pre>
- * name(fieldName).type().floatType().noDefault()
- * </pre>
- */
- public FieldAssembler<R> requiredFloat(String fieldName) {
- return name(fieldName).type().floatType().noDefault();
- }
-
- /**
- * Shortcut for creating an optional float field: a union of null and float
- * with null default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().optional().floatType()
- * </pre>
- */
- public FieldAssembler<R> optionalFloat(String fieldName) {
- return name(fieldName).type().optional().floatType();
- }
-
- /**
- * Shortcut for creating a nullable float field: a union of float and null
- * with a float default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().nullable().floatType().floatDefault(defaultVal)
- * </pre>
- */
- public FieldAssembler<R> nullableFloat(String fieldName, float defaultVal) {
- return name(fieldName).type().nullable().floatType().floatDefault(defaultVal);
- }
-
- /**
- * Shortcut for creating a double field with the given name and no default.
- * <p/>This is equivalent to:
- * <pre>
- * name(fieldName).type().doubleType().noDefault()
- * </pre>
- */
- public FieldAssembler<R> requiredDouble(String fieldName) {
- return name(fieldName).type().doubleType().noDefault();
- }
-
- /**
- * Shortcut for creating an optional double field: a union of null and double
- * with null default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().optional().doubleType()
- * </pre>
- */
- public FieldAssembler<R> optionalDouble(String fieldName) {
- return name(fieldName).type().optional().doubleType();
- }
-
- /**
- * Shortcut for creating a nullable double field: a union of double and null
- * with a double default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().nullable().doubleType().doubleDefault(defaultVal)
- * </pre>
- */
- public FieldAssembler<R> nullableDouble(String fieldName, double defaultVal) {
- return name(fieldName).type().nullable().doubleType().doubleDefault(defaultVal);
- }
-
- /**
- * Shortcut for creating a string field with the given name and no default.
- * <p/>This is equivalent to:
- * <pre>
- * name(fieldName).type().stringType().noDefault()
- * </pre>
- */
- public FieldAssembler<R> requiredString(String fieldName) {
- return name(fieldName).type().stringType().noDefault();
- }
-
- /**
- * Shortcut for creating an optional string field: a union of null and string
- * with null default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().optional().stringType()
- * </pre>
- */
- public FieldAssembler<R> optionalString(String fieldName) {
- return name(fieldName).type().optional().stringType();
- }
-
- /**
- * Shortcut for creating a nullable string field: a union of string and null
- * with a string default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().nullable().stringType().stringDefault(defaultVal)
- * </pre>
- */
- public FieldAssembler<R> nullableString(String fieldName, String defaultVal) {
- return name(fieldName).type().nullable().stringType().stringDefault(defaultVal);
- }
-
- /**
- * Shortcut for creating a bytes field with the given name and no default.
- * <p/>This is equivalent to:
- * <pre>
- * name(fieldName).type().bytesType().noDefault()
- * </pre>
- */
- public FieldAssembler<R> requiredBytes(String fieldName) {
- return name(fieldName).type().bytesType().noDefault();
- }
-
- /**
- * Shortcut for creating an optional bytes field: a union of null and bytes
- * with null default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().optional().bytesType()
- * </pre>
- */
- public FieldAssembler<R> optionalBytes(String fieldName) {
- return name(fieldName).type().optional().bytesType();
- }
-
- /**
- * Shortcut for creating a nullable bytes field: a union of bytes and null
- * with a bytes default.<p/>
- * This is equivalent to:
- * <pre>
- * name(fieldName).type().nullable().bytesType().bytesDefault(defaultVal)
- * </pre>
- */
- public FieldAssembler<R> nullableBytes(String fieldName, byte[] defaultVal) {
- return name(fieldName).type().nullable().bytesType().bytesDefault(defaultVal);
- }
-
- /**
- * End adding fields to this record, returning control
- * to the context that this record builder was created in.
- */
- public R endRecord() {
- record.setFields(fields);
- return context.complete(record);
- }
-
- private FieldAssembler<R> addField(Field field) {
- fields.add(field);
- return this;
- }
-
- }
-
- /**
- * Builds a Field in the context of a {@link FieldAssembler}.
- *
- * Usage is to first configure any of the optional parameters and then to call one
- * of the type methods to complete the field. For example
- * <pre>
- * .namespace("org.apache.example").orderDecending().type()
- * </pre>
- * Optional parameters for a field are namespace, doc, order, and aliases.
- */
- public final static class FieldBuilder<R> extends
- NamedBuilder<FieldBuilder<R>> {
- private final FieldAssembler<R> fields;
- private Schema.Field.Order order = Schema.Field.Order.ASCENDING;
-
- private FieldBuilder(FieldAssembler<R> fields, NameContext names, String name) {
- super(names, name);
- this.fields = fields;
- }
-
- /** Set this field to have ascending order. Ascending is the default **/
- public FieldBuilder<R> orderAscending() {
- order = Schema.Field.Order.ASCENDING;
- return self();
- }
-
- /** Set this field to have decending order. Decending is the default **/
- public FieldBuilder<R> orderDescending() {
- order = Schema.Field.Order.DESCENDING;
- return self();
- }
-
- /** Set this field to ignore order. **/
- public FieldBuilder<R> orderIgnore() {
- order = Schema.Field.Order.IGNORE;
- return self();
- }
-
- /**
- * Final step in configuring this field, finalizing name, namespace, alias,
- * and order.
- * @return A builder for the field's type and default value.
- */
- public FieldTypeBuilder<R> type() {
- return new FieldTypeBuilder<R>(this);
- }
-
- /**
- * Final step in configuring this field, finalizing name, namespace, alias,
- * and order. Sets the field's type to the provided schema, returns a
- * {@link GenericDefault}.
- */
- public GenericDefault<R> type(Schema type) {
- return new GenericDefault<R>(this, type);
- }
-
- /**
- * Final step in configuring this field, finalizing name, namespace, alias,
- * and order. Sets the field's type to the schema by name reference.
- * <p/>
- * The name must correspond with a named schema that has already been
- * created in the context of this builder. The name may be a fully qualified
- * name, or a short name. If it is a short name, the namespace context of
- * this builder will be used.
- * <p/>
- * The name and namespace context rules are the same as the Avro schema JSON
- * specification.
- */
- public GenericDefault<R> type(String name) {
- return type(name, null);
- }
-
- /**
- * Final step in configuring this field, finalizing name, namespace, alias,
- * and order. Sets the field's type to the schema by name reference.
- * <p/>
- * The name must correspond with a named schema that has already been
- * created in the context of this builder. The name may be a fully qualified
- * name, or a short name. If it is a full name, the namespace is ignored. If
- * it is a short name, the namespace provided is used. If the namespace
- * provided is null, the namespace context of this builder will be used.
- * <p/>
- * The name and namespace context rules are the same as the Avro schema JSON
- * specification.
- */
- public GenericDefault<R> type(String name, String namespace) {
- Schema schema = names().get(name, namespace);
- return type(schema);
- }
-
- private FieldAssembler<R> completeField(Schema schema) {
- return completeField(schema, null);
- }
-
- private FieldAssembler<R> completeField(Schema schema, Object defaultVal) {
- Field field = new Field(name(), schema, doc(), defaultVal, order);
- addPropsTo(field);
- addAliasesTo(field);
- return fields.addField(field);
- }
-
- @Override
- protected FieldBuilder<R> self() {
- return this;
- }
- }
-
- /** Abstract base class for field defaults. **/
- public static abstract class FieldDefault<R, S extends FieldDefault<R, S>> extends Completion<S> {
- private final FieldBuilder<R> field;
- private Schema schema;
-
- FieldDefault(FieldBuilder<R> field) {
- this.field = field;
- }
-
- /** Completes this field with no default value **/
- public final FieldAssembler<R> noDefault() {
- return field.completeField(schema);
- }
-
- private FieldAssembler<R> usingDefault(Object defaultVal) {
- return field.completeField(schema, defaultVal);
- }
-
- @Override
- final S complete(Schema schema) {
- this.schema = schema;
- return self();
- }
-
- abstract S self();
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class BooleanDefault<R> extends FieldDefault<R, BooleanDefault<R>> {
- private BooleanDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided **/
- public final FieldAssembler<R> booleanDefault(boolean defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final BooleanDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class IntDefault<R> extends FieldDefault<R, IntDefault<R>> {
- private IntDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided **/
- public final FieldAssembler<R> intDefault(int defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final IntDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class LongDefault<R> extends FieldDefault<R, LongDefault<R>> {
- private LongDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided **/
- public final FieldAssembler<R> longDefault(long defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final LongDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class FloatDefault<R> extends FieldDefault<R, FloatDefault<R>> {
- private FloatDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided **/
- public final FieldAssembler<R> floatDefault(float defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final FloatDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class DoubleDefault<R> extends FieldDefault<R, DoubleDefault<R>> {
- private DoubleDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided **/
- public final FieldAssembler<R> doubleDefault(double defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final DoubleDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class StringDefault<R> extends FieldDefault<R, StringDefault<R>> {
- private StringDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided. Cannot be null. **/
- public final FieldAssembler<R> stringDefault(String defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final StringDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class BytesDefault<R> extends FieldDefault<R, BytesDefault<R>> {
- private BytesDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided, cannot be null **/
- public final FieldAssembler<R> bytesDefault(byte[] defaultVal) {
- return super.usingDefault(ByteBuffer.wrap(defaultVal));
- }
-
- /** Completes this field with the default value provided, cannot be null **/
- public final FieldAssembler<R> bytesDefault(ByteBuffer defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- /** Completes this field with the default value provided, cannot be null.
- * The string is interpreted as a byte[], with each character code point
- * value equalling the byte value, as in the Avro spec JSON default. **/
- public final FieldAssembler<R> bytesDefault(String defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final BytesDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class NullDefault<R> extends FieldDefault<R, NullDefault<R>> {
- private NullDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with a default value of null **/
- public final FieldAssembler<R> nullDefault() {
- return super.usingDefault(null);
- }
-
- @Override
- final NullDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class MapDefault<R> extends FieldDefault<R, MapDefault<R>> {
- private MapDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided, cannot be null **/
- public final <K, V> FieldAssembler<R> mapDefault(Map<K, V> defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final MapDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class ArrayDefault<R> extends FieldDefault<R, ArrayDefault<R>> {
- private ArrayDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided, cannot be null **/
- public final <V> FieldAssembler<R> arrayDefault(List<V> defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final ArrayDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class FixedDefault<R> extends FieldDefault<R, FixedDefault<R>> {
- private FixedDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided, cannot be null **/
- public final FieldAssembler<R> fixedDefault(byte[] defaultVal) {
- return super.usingDefault(ByteBuffer.wrap(defaultVal));
- }
-
- /** Completes this field with the default value provided, cannot be null **/
- public final FieldAssembler<R> fixedDefault(ByteBuffer defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- /** Completes this field with the default value provided, cannot be null.
- * The string is interpreted as a byte[], with each character code point
- * value equalling the byte value, as in the Avro spec JSON default. **/
- public final FieldAssembler<R> fixedDefault(String defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final FixedDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class EnumDefault<R> extends FieldDefault<R, EnumDefault<R>> {
- private EnumDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- /** Completes this field with the default value provided, cannot be null **/
- public final FieldAssembler<R> enumDefault(String defaultVal) {
- return super.usingDefault(defaultVal);
- }
-
- @Override
- final EnumDefault<R> self() {
- return this;
- }
- }
-
- /** Choose whether to use a default value for the field or not. **/
- public static class RecordDefault<R> extends FieldDefault<R, RecordDefault<R>> {
- private RecordDefault(FieldBuilder<R> field) {
- super(field);
- }
-
- @Override
- final RecordDefault<R> self() {
- return this;
- }
- }
-
- public final static class GenericDefault<R> {
- private final FieldBuilder<R> field;
- private final Schema schema;
-
- private GenericDefault(FieldBuilder<R> field, Schema schema) {
- this.field = field;
- this.schema = schema;
- }
-
- /** Do not use a default value for this field. **/
- public FieldAssembler<R> noDefault() {
- return field.completeField(schema);
- }
-
- /** Completes this field with the default value provided.
- * The value must conform to the schema of the field. **/
- public FieldAssembler<R> withDefault(Object defaultVal) {
- return field.completeField(schema, defaultVal);
- }
- }
-
- /**
- * Completion<R> is for internal builder use, all subclasses are private.
- *
- * Completion is an object that takes a Schema and returns some result.
- */
- private abstract static class Completion<R> {
- abstract R complete(Schema schema);
- }
-
- private static class SchemaCompletion extends Completion<Schema> {
- @Override
- protected Schema complete(Schema schema) {
- return schema;
- }
- }
-
- private static final Schema NULL_SCHEMA = Schema.create(Schema.Type.NULL);
-
- private static class NullableCompletion<R> extends Completion<R> {
- private final Completion<R> context;
-
- private NullableCompletion(Completion<R> context) {
- this.context = context;
- }
-
- @Override
- protected R complete(Schema schema) {
- // wrap the schema as a union of the schema and null
- Schema nullable = Schema.createUnion(Arrays.asList(schema, NULL_SCHEMA));
- return context.complete(nullable);
- }
- }
-
- private static class OptionalCompletion<R> extends Completion<FieldAssembler<R>> {
- private final FieldBuilder<R> bldr;
-
- public OptionalCompletion(FieldBuilder<R> bldr) {
- this.bldr = bldr;
- }
-
- @Override
- protected FieldAssembler<R> complete(Schema schema) {
- // wrap the schema as a union of null and the schema
- Schema optional = Schema.createUnion(Arrays.asList(NULL_SCHEMA, schema));
- return bldr.completeField(optional, (Object) null);
- }
- }
-
- private abstract static class CompletionWrapper {
- abstract <R> Completion<R> wrap(Completion<R> completion);
- }
-
- private static final class NullableCompletionWrapper extends CompletionWrapper {
- @Override
- <R> Completion<R> wrap(Completion<R> completion) {
- return new NullableCompletion<R>(completion);
- }
- }
-
- private static abstract class NestedCompletion<R> extends Completion<R> {
- private final Completion<R> context;
- private final PropBuilder<?> assembler;
-
- private NestedCompletion(PropBuilder<?> assembler, Completion<R> context) {
- this.context = context;
- this.assembler = assembler;
- }
-
- @Override
- protected final R complete(Schema schema) {
- Schema outer = outerSchema(schema);
- assembler.addPropsTo(outer);
- return context.complete(outer);
- }
-
- protected abstract Schema outerSchema(Schema inner);
- }
-
- private static class MapCompletion<R> extends NestedCompletion<R> {
- private MapCompletion(MapBuilder<R> assembler, Completion<R> context) {
- super(assembler, context);
- }
-
- @Override
- protected Schema outerSchema(Schema inner) {
- return Schema.createMap(inner);
- }
- }
-
- private static class ArrayCompletion<R> extends NestedCompletion<R> {
- private ArrayCompletion(ArrayBuilder<R> assembler, Completion<R> context) {
- super(assembler, context);
- }
-
- @Override
- protected Schema outerSchema(Schema inner) {
- return Schema.createArray(inner);
- }
- }
-
- private static class UnionCompletion<R> extends
- Completion<UnionAccumulator<R>> {
- private final Completion<R> context;
- private final NameContext names;
- private final List<Schema> schemas;
-
- private UnionCompletion(Completion<R> context, NameContext names, List<Schema> schemas) {
- this.context = context;
- this.names = names;
- this.schemas = schemas;
- }
-
- @Override
- protected UnionAccumulator<R> complete(Schema schema) {
- List<Schema> updated = new ArrayList<Schema>(this.schemas);
- updated.add(schema);
- return new UnionAccumulator<R>(context, names, updated);
- }
- }
-
- /** Accumulates all of the types in a union. Add an additional type with
- * {@link #and()}. Complete the union with {@link #endUnion()}
- */
- public static final class UnionAccumulator<R> {
- private final Completion<R> context;
- private final NameContext names;
- private final List<Schema> schemas;
-
- private UnionAccumulator(Completion<R> context, NameContext names, List<Schema> schemas) {
- this.context = context;
- this.names = names;
- this.schemas = schemas;
- }
-
- /** Add an additional type to this union **/
- public BaseTypeBuilder<UnionAccumulator<R>> and() {
- return new UnionBuilder<R>(context, names, schemas);
- }
-
- /** Complete this union **/
- public R endUnion() {
- Schema schema = Schema.createUnion(schemas);
- return context.complete(schema);
- }
- }
-
- private static void checkRequired(Object reference, String errorMessage) {
- if (reference == null) {
- throw new NullPointerException(errorMessage);
- }
- }
-}
http://git-wip-us.apache.org/repos/asf/kafka/blob/492bfdfa/copycat/data/src/main/java/org/apache/kafka/copycat/data/SchemaParseException.java
----------------------------------------------------------------------
diff --git a/copycat/data/src/main/java/org/apache/kafka/copycat/data/SchemaParseException.java b/copycat/data/src/main/java/org/apache/kafka/copycat/data/SchemaParseException.java
deleted file mode 100644
index 0982791..0000000
--- a/copycat/data/src/main/java/org/apache/kafka/copycat/data/SchemaParseException.java
+++ /dev/null
@@ -1,32 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- **/
-
-
-
-package org.apache.kafka.copycat.data;
-
-/** Thrown for errors parsing schemas and protocols. */
-public class SchemaParseException extends DataRuntimeException {
- public SchemaParseException(Throwable cause) {
- super(cause);
- }
-
- public SchemaParseException(String message) {
- super(message);
- }
-}
-
http://git-wip-us.apache.org/repos/asf/kafka/blob/492bfdfa/copycat/file/src/main/java/org/apache/kafka/copycat/file/FileStreamSinkConnector.java
----------------------------------------------------------------------
diff --git a/copycat/file/src/main/java/org/apache/kafka/copycat/file/FileStreamSinkConnector.java b/copycat/file/src/main/java/org/apache/kafka/copycat/file/FileStreamSinkConnector.java
index e41364e..6e2b04d 100644
--- a/copycat/file/src/main/java/org/apache/kafka/copycat/file/FileStreamSinkConnector.java
+++ b/copycat/file/src/main/java/org/apache/kafka/copycat/file/FileStreamSinkConnector.java
@@ -39,12 +39,12 @@ public class FileStreamSinkConnector extends SinkConnector {
}
@Override
- public Class<? extends Task> getTaskClass() {
+ public Class<? extends Task> taskClass() {
return FileStreamSinkTask.class;
}
@Override
- public List<Properties> getTaskConfigs(int maxTasks) {
+ public List<Properties> taskConfigs(int maxTasks) {
ArrayList<Properties> configs = new ArrayList<>();
for (int i = 0; i < maxTasks; i++) {
Properties config = new Properties();