diff options
Diffstat (limited to 'sca-java-1.x/tags/1.2/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONObject.java')
-rw-r--r-- | sca-java-1.x/tags/1.2/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONObject.java | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.2/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONObject.java b/sca-java-1.x/tags/1.2/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONObject.java new file mode 100644 index 0000000000..e6b082dc81 --- /dev/null +++ b/sca-java-1.x/tags/1.2/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/JavaBean2JSONObject.java @@ -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 JavaBean2JSONObject 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 SimpleTypeMapperImpl MAPPER = new SimpleTypeMapperImpl(); + private static final Object[] NULL = 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); + } + } + + private static boolean isSimpleType(Class<?> javaType) { + return SimpleTypeMapperImpl.getXMLType(javaType) != null; + } + + public JavaBean2JSONObject() { + } + + @Override + public String getSourceDataBinding() { + return JavaBeansDataBinding.NAME; + } + + @Override + protected Class getSourceType() { + return Object.class; + } + + @Override + public String getTargetDataBinding() { + return JSONDataBinding.NAME; + } + + @Override + protected Class getTargetType() { + return Object.class; + } + + 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; + + } + + public Object transform(Object source, TransformationContext context) { + try { + return toJSON(source); + } catch (Exception e) { + throw new TransformationException(e); + } + } + +} |