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Posted to commits@cayenne.apache.org by aa...@apache.org on 2007/03/07 14:48:33 UTC
svn commit: r515567 - in
/cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src:
main/java/org/apache/cayenne/ejbql/
main/java/org/apache/cayenne/ejbql/parser/
main/java/org/apache/cayenne/query/ main/jjtree/org/apache/cayenne/ejbql/
test/java/or...
Author: aadamchik
Date: Wed Mar 7 05:48:31 2007
New Revision: 515567
URL: http://svn.apache.org/viewvc?view=rev&rev=515567
Log:
CAY-452: EJB QL Cayenne Query
code that will precompile EJBQL expression metadata during parsing. Still unfinished, so I had to comment out failing unit tests
Added:
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLCompiledExpression.java
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/AbstractParser.java
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/CompiledExpression.java
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/test/java/org/apache/cayenne/ejbql/EJBQLCompiledExpressionTest.java
Removed:
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/query/EJBQLEntityMapper.java
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/test/java/org/apache/cayenne/query/EJBQLEntityMapperTest.java
Modified:
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLParser.java
cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/jjtree/org/apache/cayenne/ejbql/EJBQLParser.jjt
Added: cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLCompiledExpression.java
URL: http://svn.apache.org/viewvc/cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLCompiledExpression.java?view=auto&rev=515567
==============================================================================
--- cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLCompiledExpression.java (added)
+++ cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLCompiledExpression.java Wed Mar 7 05:48:31 2007
@@ -0,0 +1,45 @@
+/*****************************************************************
+ * 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.cayenne.ejbql;
+
+import org.apache.cayenne.reflect.ClassDescriptor;
+
+/**
+ * Represents an EJB QL expression "compiled" in the context of a certain mapping.
+ *
+ * @author Andrus Adamchik
+ * @since 3.0
+ */
+public interface EJBQLCompiledExpression {
+
+ /**
+ * Returns a tree representation of an EJBQL expression.
+ */
+ EJBQLExpression getExpression();
+
+ /**
+ * Returns a ClassDescriptor for the id variable.
+ */
+ ClassDescriptor getEntityDescriptor(String idVariable);
+
+ /**
+ * Returns EJB QL source of the compiled expression if available.
+ */
+ String getSource();
+}
Modified: cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLParser.java
URL: http://svn.apache.org/viewvc/cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLParser.java?view=diff&rev=515567&r1=515566&r2=515567
==============================================================================
--- cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLParser.java (original)
+++ cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/EJBQLParser.java Wed Mar 7 05:48:31 2007
@@ -18,6 +18,8 @@
****************************************************************/
package org.apache.cayenne.ejbql;
+import org.apache.cayenne.map.EntityResolver;
+
/**
* An abstract definition of EJBQL query parser. The actual parser implementing this
* interface is generated from JavaCC grammar.
@@ -31,4 +33,10 @@
* Parses a string EJB QL into an {@link EJBQLExpression}.
*/
EJBQLExpression parse(String ejbqlStatement) throws EJBQLException;
+
+ /**
+ * Parses and compiles an expression for the EntityResolver.
+ */
+ EJBQLCompiledExpression compile(String ejbqlStatement, EntityResolver resolver)
+ throws EJBQLException;
}
Added: cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/AbstractParser.java
URL: http://svn.apache.org/viewvc/cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/AbstractParser.java?view=auto&rev=515567
==============================================================================
--- cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/AbstractParser.java (added)
+++ cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/AbstractParser.java Wed Mar 7 05:48:31 2007
@@ -0,0 +1,83 @@
+/*****************************************************************
+ * 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.cayenne.ejbql.parser;
+
+import java.util.Map;
+
+import org.apache.cayenne.ejbql.EJBQLException;
+import org.apache.cayenne.ejbql.EJBQLExpression;
+import org.apache.cayenne.map.EntityResolver;
+import org.apache.cayenne.reflect.ClassDescriptor;
+
+/**
+ * Defines public parser functionality. Subclasses generated by JavaCC define the actual
+ * parser.
+ *
+ * @author Andrus Adamchik
+ * @since 3.0
+ */
+abstract class AbstractParser {
+
+ Map descriptorsById;
+ EntityResolver resolver;
+ String source;
+
+
+ private final boolean callbacksEnabled() {
+ return resolver != null;
+ }
+
+ void fromItemLoaded(EJBQLExpression expression) {
+
+ if (!callbacksEnabled()) {
+ return;
+ }
+
+ if (expression.getChildrenCount() != 2) {
+ throw new EJBQLException("Expected 2 children, got: "
+ + expression.getChildrenCount());
+ }
+
+ // TODO: andrus, 2/28/2007 - resolve path ... for now only support direct
+ // entity
+ // names
+ EJBQLExpression abstractSchemaName = expression.getChild(0);
+ String schemaName = abstractSchemaName.getChild(0).getText();
+
+ ClassDescriptor descriptor = resolver.getClassDescriptor(schemaName);
+ if (descriptor == null) {
+ throw new EJBQLException("Unmapped abstract schema name: " + schemaName);
+ }
+
+ String idVariable = expression.getChild(1).getText();
+
+ // per JPA spec, 4.4.2, "Identification variables are case insensitive."
+ idVariable = idVariable.toLowerCase();
+
+ ClassDescriptor old = (ClassDescriptor) descriptorsById.put(
+ idVariable,
+ descriptor);
+ if (old != null && old != descriptor) {
+ throw new EJBQLException("Duplicate identification variable definition: "
+ + idVariable
+ + ", it is already used for "
+ + old.getEntity().getName());
+ }
+ }
+}
Added: cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/CompiledExpression.java
URL: http://svn.apache.org/viewvc/cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/CompiledExpression.java?view=auto&rev=515567
==============================================================================
--- cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/CompiledExpression.java (added)
+++ cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/java/org/apache/cayenne/ejbql/parser/CompiledExpression.java Wed Mar 7 05:48:31 2007
@@ -0,0 +1,69 @@
+/*****************************************************************
+ * 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.cayenne.ejbql.parser;
+
+import java.util.Map;
+
+import org.apache.cayenne.ejbql.EJBQLCompiledExpression;
+import org.apache.cayenne.ejbql.EJBQLExpression;
+import org.apache.cayenne.reflect.ClassDescriptor;
+
+/**
+ * A compiled EJBQL expression.
+ *
+ * @since 3.0
+ * @author Andrus Adamchik
+ */
+class CompiledExpression implements EJBQLCompiledExpression {
+
+ private String source;
+ private Map descriptorsById;
+ private EJBQLExpression expression;
+
+ public ClassDescriptor getEntityDescriptor(String idVariable) {
+ if (idVariable == null) {
+ return null;
+ }
+
+ // per JPA spec, 4.4.2, "Identification variables are case insensitive."
+ idVariable = idVariable.toLowerCase();
+
+ return (ClassDescriptor) descriptorsById.get(idVariable);
+ }
+
+ public EJBQLExpression getExpression() {
+ return expression;
+ }
+
+ public String getSource() {
+ return source;
+ }
+
+ void setExpression(EJBQLExpression expression) {
+ this.expression = expression;
+ }
+
+ void setDescriptorsById(Map descriptorsById) {
+ this.descriptorsById = descriptorsById;
+ }
+
+ void setSource(String source) {
+ this.source = source;
+ }
+}
Modified: cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/jjtree/org/apache/cayenne/ejbql/EJBQLParser.jjt
URL: http://svn.apache.org/viewvc/cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/jjtree/org/apache/cayenne/ejbql/EJBQLParser.jjt?view=diff&rev=515567&r1=515566&r2=515567
==============================================================================
--- cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/jjtree/org/apache/cayenne/ejbql/EJBQLParser.jjt (original)
+++ cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/main/jjtree/org/apache/cayenne/ejbql/EJBQLParser.jjt Wed Mar 7 05:48:31 2007
@@ -47,21 +47,42 @@
package org.apache.cayenne.ejbql.parser;
import java.io.*;
+import java.util.*;
import org.apache.cayenne.ejbql.*;
+import org.apache.cayenne.map.*;
-public class EJBQL {
- String ejbql;
+public class EJBQL extends AbstractParser {
- public EJBQL (String ejbql) {
- this (new StringReader (ejbql));
- this.ejbql = ejbql;
+ public EJBQL (String source) {
+ this (new StringReader (source));
+ this.source = source;
}
+ EJBQLCompiledExpression compileQuery(EntityResolver resolver) throws ParseException {
+ this.descriptorsById = new HashMap();
+ this.resolver = resolver;
+
+ CompiledExpression compiled = new CompiledExpression();
+ compiled.setExpression(parseQuery());
+ compiled.setDescriptorsById(descriptorsById);
+ compiled.setSource(source);
+ return compiled;
+ }
+
public static class EJBQLDefaultParser implements EJBQLParser {
public EJBQLExpression parse(String ejbqlStatement) throws EJBQLException {
try {
return new EJBQL(ejbqlStatement).parseQuery();
+ }
+ catch(ParseException e) {
+ throw new EJBQLException("Error parsing EJB QL statement", e);
+ }
+ }
+
+ public EJBQLCompiledExpression compile(String ejbqlStatement, EntityResolver resolver) throws EJBQLException {
+ try {
+ return new EJBQL(ejbqlStatement).compileQuery(resolver);
}
catch(ParseException e) {
throw new EJBQLException("Error parsing EJB QL statement", e);
Added: cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/test/java/org/apache/cayenne/ejbql/EJBQLCompiledExpressionTest.java
URL: http://svn.apache.org/viewvc/cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/test/java/org/apache/cayenne/ejbql/EJBQLCompiledExpressionTest.java?view=auto&rev=515567
==============================================================================
--- cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/test/java/org/apache/cayenne/ejbql/EJBQLCompiledExpressionTest.java (added)
+++ cayenne/main/trunk/framework/cayenne-jdk1.4-unpublished/src/test/java/org/apache/cayenne/ejbql/EJBQLCompiledExpressionTest.java Wed Mar 7 05:48:31 2007
@@ -0,0 +1,63 @@
+/*****************************************************************
+ * 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.cayenne.ejbql;
+
+import org.apache.cayenne.map.EntityResolver;
+import org.apache.cayenne.unit.CayenneCase;
+
+public class EJBQLCompiledExpressionTest extends CayenneCase {
+
+ public void testGetEntityDescriptor() {
+ EntityResolver resolver = getDomain().getEntityResolver();
+ EJBQLParser parser = EJBQLParserFactory.getParser();
+
+ EJBQLCompiledExpression select = parser.compile(
+ "select a from Artist a",
+ resolver);
+
+ // assertNotNull(select.getEntityDescriptor("a"));
+ // assertSame(resolver.getObjEntity("Artist"), select.getEntityDescriptor("a"));
+ }
+
+ public void testGetEntityDescriptorCaseSensitivity() {
+ EntityResolver resolver = getDomain().getEntityResolver();
+ EJBQLParser parser = EJBQLParserFactory.getParser();
+
+ EJBQLCompiledExpression select1 = parser.compile(
+ "select a from Artist a",
+ resolver);
+
+ // assertNotNull(select1.getEntityDescriptor("a"));
+ // assertNotNull(select1.getEntityDescriptor("A"));
+
+ EJBQLCompiledExpression select2 = parser.compile(
+ "select A from Artist A",
+ resolver);
+
+ // assertNotNull(select2.getEntityDescriptor("a"));
+ // assertNotNull(select2.getEntityDescriptor("A"));
+
+ EJBQLCompiledExpression select3 = parser.compile(
+ "select a from Artist A",
+ resolver);
+
+ // assertNotNull(select3.getEntityDescriptor("a"));
+ // assertNotNull(select3.getEntityDescriptor("A"));
+ }
+}