From 23d5587f8a4a4dfa5fb2f5d9497d04733cdfe8df Mon Sep 17 00:00:00 2001 From: antelder Date: Mon, 21 Dec 2009 11:58:17 +0000 Subject: Copy 1.x trunk to branches for start of 1.6 release git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@892786 13f79535-47bb-0310-9956-ffa450edef68 --- .../saxon/ItemList2ObjectTransformer.java | 153 +++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 sca-java-1.x/branches/sca-java-1.6/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java (limited to 'sca-java-1.x/branches/sca-java-1.6/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java') diff --git a/sca-java-1.x/branches/sca-java-1.6/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java b/sca-java-1.x/branches/sca-java-1.6/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java new file mode 100644 index 0000000000..7122217b8b --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.6/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java @@ -0,0 +1,153 @@ +/* + * 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.saxon; + +import java.lang.reflect.Array; + +import net.sf.saxon.om.Item; +import net.sf.saxon.om.NodeInfo; +import net.sf.saxon.trans.XPathException; +import net.sf.saxon.value.Value; + +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.saxon.collection.ItemList; + +/** + * Transforms each object contained in the ItemList object. + * + * If the object type is the same as the target type, it is not transformed. + * + * If the object is a NodeInfo, it's transformed to a DataObject. + * + * If the object is a Value, it's transformed to a Java object. + * + * If the target type is not an array, the first transformed object is returned. + * + * If the first transformed object type is not a target type, then a + * TransformException is thrown + * + * If the target type is an array, a array of this type is created containing + * all transformed objects and it is returned + * + * If any transformed object is not a target type, then a TransformException is + * thrown + * + * @version $Rev: 659284 $ $Date: 2008-05-22 14:26:18 -0800 (Thu, 22 May 2008) $ + */ +public class ItemList2ObjectTransformer extends BaseTransformer implements + PullTransformer { + + private NodeInfo2DataObjectTransformer nodeInfo2DataObjectTransformer = new NodeInfo2DataObjectTransformer(); + + public ItemList2ObjectTransformer() { + } + + @Override + protected Class getSourceType() { + return ItemList.class; + } + + @Override + protected Class getTargetType() { + return Object.class; + } + + @Override + public int getWeight() { + return 30 + nodeInfo2DataObjectTransformer.getWeight(); + } + + public Object transform(ItemList source, TransformationContext context) { + + if (source.size() == 0) { + return null; + } + + Class targetType = context.getTargetDataType().getPhysical(); + + if (targetType.isArray()) { + int i = 0; + Class componentClass = targetType.getComponentType(); + Object[] result = (Object[])Array.newInstance(componentClass, source.size()); + + try { + + if (componentClass.isAssignableFrom(NodeInfo.class) || componentClass.isAssignableFrom(Value.class)) { + + for (Item item : source) { + result[i++] = item; + } + + } else { + + for (Item item : source) { + + if (item instanceof NodeInfo) { + result[i] = nodeInfo2DataObjectTransformer.transform((NodeInfo)item, context); + + } else if (item instanceof Value) { + result[i] = Value.convert(item); + + } else { + result[i] = item; + } + + i++; + + } + + } + + } catch (ArrayStoreException ex) { + throw new TransformationException(ex); + + } catch (XPathException ex) { + throw new TransformationException(ex); + } + + return result; + + } else { + Item item = source.iterator().next(); + + if (item.getClass().isAssignableFrom(targetType)) { + return item; + + } else if (item instanceof NodeInfo) { + return nodeInfo2DataObjectTransformer.transform((NodeInfo)item, context); + + } else { + + try { + return Value.convert(item); + + } catch (XPathException e) { + throw new TransformationException(e); + } + + } + + } + + } + +} -- cgit v1.2.3