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Posted to commits@tuscany.apache.org by rf...@apache.org on 2007/10/25 04:58:55 UTC
svn commit: r588117 - in
/incubator/tuscany/java/sca/modules/databinding-json/src:
main/java/org/apache/tuscany/sca/databinding/json/
main/resources/META-INF/services/
test/java/org/apache/tuscany/sca/databinding/json/
Author: rfeng
Date: Wed Oct 24 19:58:54 2007
New Revision: 588117
URL: http://svn.apache.org/viewvc?rev=588117&view=rev
Log:
Add a transformer to convert data from simple or java bean types to JSON
Added:
incubator/tuscany/java/sca/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSON.java (with props)
incubator/tuscany/java/sca/modules/databinding-json/src/test/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONTestCase.java (with props)
Modified:
incubator/tuscany/java/sca/modules/databinding-json/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer
Added: incubator/tuscany/java/sca/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSON.java
URL: http://svn.apache.org/viewvc/incubator/tuscany/java/sca/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSON.java?rev=588117&view=auto
==============================================================================
--- incubator/tuscany/java/sca/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSON.java (added)
+++ incubator/tuscany/java/sca/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSON.java Wed Oct 24 19:58:54 2007
@@ -0,0 +1,139 @@
+/*
+ * 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.tuscany.sca.databinding.json;
+
+import java.beans.BeanInfo;
+import java.beans.Introspector;
+import java.beans.PropertyDescriptor;
+import java.lang.reflect.Array;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Comparator;
+
+import org.apache.tuscany.sca.databinding.PullTransformer;
+import org.apache.tuscany.sca.databinding.TransformationContext;
+import org.apache.tuscany.sca.databinding.TransformationException;
+import org.apache.tuscany.sca.databinding.impl.BaseTransformer;
+import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl;
+import org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding;
+import org.apache.tuscany.sca.interfacedef.util.TypeInfo;
+import org.codehaus.jettison.json.JSONArray;
+import org.codehaus.jettison.json.JSONObject;
+
+public class JavaBean2JSON extends BaseTransformer<Object, Object> implements PullTransformer<Object, Object> {
+ private final static Comparator<PropertyDescriptor> COMPARATOR = new Comparator<PropertyDescriptor>() {
+ public int compare(PropertyDescriptor o1, PropertyDescriptor o2) {
+ return o1.getName().compareTo(o2.getName());
+ }
+ };
+
+ private static final Object[] NULL = null;
+ private static final SimpleTypeMapperImpl MAPPER = new SimpleTypeMapperImpl();
+
+ public Object transform(Object source, TransformationContext context) {
+ try {
+ return toJSON(source);
+ } catch (Exception e) {
+ throw new TransformationException(e);
+ }
+ }
+
+ public Object toJSON(Object source) throws Exception {
+ if (source == null) {
+ return JSONObject.NULL;
+ }
+ Class<?> type = source.getClass();
+ if (isSimpleType(type)) {
+ return source;
+ } else if (type.isArray()) {
+ JSONArray array = new JSONArray();
+ int i1 = Array.getLength(source);
+ for (int j = 0; j < i1; j++) {
+ Object o = Array.get(source, j);
+ array.put(toJSON(o));
+ }
+ return array;
+ } else if (Collection.class.isAssignableFrom(type)) {
+ Collection c = (Collection)source;
+ JSONArray array = new JSONArray();
+ for (Object element : c) {
+ array.put(toJSON(element));
+ }
+ return array;
+ }
+ JSONObject json = new JSONObject();
+ BeanInfo beanInfo = Introspector.getBeanInfo(type);
+ PropertyDescriptor[] propDescs = beanInfo.getPropertyDescriptors();
+ Collections.sort(Arrays.asList(propDescs), COMPARATOR);
+
+ for (int i = 0; i < propDescs.length; i++) {
+ PropertyDescriptor propDesc = propDescs[i];
+ Class<?> pType = propDesc.getPropertyType();
+ if ("class".equals(propDesc.getName())) {
+ continue;
+ }
+ Object pValue = propDesc.getReadMethod().invoke(source, NULL);
+ json.put(propDesc.getName(), toJSON(pValue));
+ }
+ return json;
+
+ }
+
+ @Override
+ protected Class getSourceType() {
+ return Object.class;
+ }
+
+ @Override
+ protected Class getTargetType() {
+ return Object.class;
+ }
+
+ public JavaBean2JSON() {
+ }
+
+ private static boolean isSimpleType(Class<?> javaType) {
+ return SimpleTypeMapperImpl.getXMLType(javaType) != null;
+ }
+
+ private static String getStringValue(Object o) {
+ if (o == null) {
+ return null;
+ }
+ TypeInfo info = SimpleTypeMapperImpl.getXMLType(o.getClass());
+ if (info != null) {
+ return MAPPER.toXMLLiteral(info.getQName(), o, null);
+ } else {
+ return String.valueOf(o);
+ }
+ }
+
+ @Override
+ public String getSourceDataBinding() {
+ return JavaBeansDataBinding.NAME;
+ }
+
+ @Override
+ public String getTargetDataBinding() {
+ return JSONDataBinding.NAME;
+ }
+
+}
Propchange: incubator/tuscany/java/sca/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSON.java
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svn:eol-style = native
Propchange: incubator/tuscany/java/sca/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSON.java
------------------------------------------------------------------------------
svn:keywords = Rev Date
Modified: incubator/tuscany/java/sca/modules/databinding-json/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer
URL: http://svn.apache.org/viewvc/incubator/tuscany/java/sca/modules/databinding-json/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer?rev=588117&r1=588116&r2=588117&view=diff
==============================================================================
--- incubator/tuscany/java/sca/modules/databinding-json/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer (original)
+++ incubator/tuscany/java/sca/modules/databinding-json/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer Wed Oct 24 19:58:54 2007
@@ -18,4 +18,6 @@
# Implementation classes for the transformers
org.apache.tuscany.sca.databinding.json.JSON2XMLStreamReader;source=org.codehaus.jettison.json.JSONObject,target=javax.xml.stream.XMLStreamReader,weight=500
org.apache.tuscany.sca.databinding.json.XMLStreamReader2JSON;source=javax.xml.stream.XMLStreamReader,target=org.codehaus.jettison.json.JSONObject,weight=500
+org.apache.tuscany.sca.databinding.json.JavaBean2JSON;source=java:complexType,target=org.codehaus.jettison.json.JSONObject,weight=20000
+org.apache.tuscany.sca.databinding.json.JavaBean2JSON;source=java:simpleType,target=org.codehaus.jettison.json.JSONObject,weight=20000
org.apache.tuscany.sca.databinding.json.axiom.JSON2OMElement;source=org.codehaus.jettison.json.JSONObject,target=org.apache.axiom.om.OMElement,weight=500
Added: incubator/tuscany/java/sca/modules/databinding-json/src/test/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONTestCase.java
URL: http://svn.apache.org/viewvc/incubator/tuscany/java/sca/modules/databinding-json/src/test/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONTestCase.java?rev=588117&view=auto
==============================================================================
--- incubator/tuscany/java/sca/modules/databinding-json/src/test/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONTestCase.java (added)
+++ incubator/tuscany/java/sca/modules/databinding-json/src/test/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONTestCase.java Wed Oct 24 19:58:54 2007
@@ -0,0 +1,134 @@
+/*
+ * 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.tuscany.sca.databinding.json;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import junit.framework.Assert;
+
+import org.codehaus.jettison.json.JSONObject;
+import org.junit.Test;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public class JavaBean2JSONTestCase {
+
+ private static class MyBean {
+ private String name;
+ private int age;
+ private boolean vip;
+ private String friends[];
+ private List<String> books;
+ private YourBean you;
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ public int getAge() {
+ return age;
+ }
+
+ public void setAge(int age) {
+ this.age = age;
+ }
+
+ public boolean isVip() {
+ return vip;
+ }
+
+ public void setVip(boolean vip) {
+ this.vip = vip;
+ }
+
+ public String[] getFriends() {
+ return friends;
+ }
+
+ public void setFriends(String[] friends) {
+ this.friends = friends;
+ }
+
+ public List<String> getBooks() {
+ return books;
+ }
+
+ public void setBooks(List<String> books) {
+ this.books = books;
+ }
+
+ public YourBean getYou() {
+ return you;
+ }
+
+ public void setYou(YourBean you) {
+ this.you = you;
+ }
+
+ }
+
+ private static class YourBean {
+ private int id;
+ private String name;
+
+ public int getId() {
+ return id;
+ }
+
+ public void setId(int id) {
+ this.id = id;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public void setName(String name) {
+ this.name = name;
+ }
+ }
+
+ @Test
+ public void testBean2JSON() throws Exception {
+ JavaBean2JSON converter = new JavaBean2JSON();
+ MyBean me = new MyBean();
+ me.setAge(30);
+ me.setBooks(new ArrayList<String>());
+ me.setFriends(new String[] {"John", "Mike"});
+ me.setVip(true);
+ me.setName("Me");
+ YourBean you = new YourBean();
+ you.setId(123);
+ you.setName(null);
+ me.setYou(you);
+ Object result = converter.transform(me, null);
+ Assert.assertTrue(result instanceof JSONObject);
+ System.out.println(result);
+ String json =
+ "{\"age\":30,\"books\":[],\"friends\":[\"John\",\"Mike\"],\"name\":\"Me\",\"vip\":true,\"you\":{\"id\":123,\"name\":null}}";
+ Assert.assertEquals(json, result.toString());
+ }
+}
Propchange: incubator/tuscany/java/sca/modules/databinding-json/src/test/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONTestCase.java
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Propchange: incubator/tuscany/java/sca/modules/databinding-json/src/test/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONTestCase.java
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svn:keywords = Rev Date
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