diff options
| author | adrianocrestani <adrianocrestani@13f79535-47bb-0310-9956-ffa450edef68> | 2008-07-01 06:16:32 +0000 |
|---|---|---|
| committer | adrianocrestani <adrianocrestani@13f79535-47bb-0310-9956-ffa450edef68> | 2008-07-01 06:16:32 +0000 |
| commit | 7d26a1c96d494640313df50375ed200acac06ebc (patch) | |
| tree | 5b005c104df471872b8d6dba69a49df1ef5c544c /java/sca/modules/databinding-saxon/src | |
| parent | 2887a53b5caa0e676cdc6c5820ec58b5069f858e (diff) | |
-adding to implementation.query support to return more than one result from a xquery execution
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@673004 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'java/sca/modules/databinding-saxon/src')
3 files changed, 198 insertions, 0 deletions
diff --git a/java/sca/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java b/java/sca/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java new file mode 100644 index 0000000000..0a9aa2de52 --- /dev/null +++ b/java/sca/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/ItemList2ObjectTransformer.java @@ -0,0 +1,158 @@ +/*
+ * 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<ItemList, Object> implements
+ PullTransformer<ItemList, Object> {
+
+ private NodeInfo2DataObjectTransformer nodeInfo2DataObjectTransformer = new NodeInfo2DataObjectTransformer();
+
+ public ItemList2ObjectTransformer() {
+ }
+
+ @Override
+ protected Class<ItemList> getSourceType() {
+ return ItemList.class;
+ }
+
+ @Override
+ protected Class<Object> 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.convertToJava(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.convertToJava(item);
+
+ } catch (XPathException e) {
+ throw new TransformationException(e);
+ }
+
+ }
+
+ }
+
+ }
+
+}
diff --git a/java/sca/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/collection/ItemList.java b/java/sca/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/collection/ItemList.java new file mode 100644 index 0000000000..065121520b --- /dev/null +++ b/java/sca/modules/databinding-saxon/src/main/java/org/apache/tuscany/sca/databinding/saxon/collection/ItemList.java @@ -0,0 +1,34 @@ +/*
+ * 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.collection;
+
+import java.util.ArrayList;
+
+import net.sf.saxon.om.Item;
+
+/**
+ * Stores a list of Item objects.
+ *
+ * Used by the implementation.xquery to store a collection of results
+ * generated by the xquery execution.
+ *
+ * @version $Rev: 659284 $ $Date: 2008-05-22 14:26:18 -0800 (Thu, 22 May 2008) $
+ */
+public class ItemList extends ArrayList<Item> {}
diff --git a/java/sca/modules/databinding-saxon/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer b/java/sca/modules/databinding-saxon/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer index 671d07afd8..829a01b896 100644 --- a/java/sca/modules/databinding-saxon/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer +++ b/java/sca/modules/databinding-saxon/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer @@ -24,3 +24,9 @@ org.apache.tuscany.sca.databinding.saxon.SimpleType2ValueTransformer;source=java org.apache.tuscany.sca.databinding.saxon.Value2SimpleTypeTransformer;source=net.sf.saxon.value.Value,target=java:simpleType,weight=80000 org.apache.tuscany.sca.databinding.saxon.NodeInfo2DataObjectTransformer;source=net.sf.saxon.om.NodeInfo,target=commonj.sdo.DataObject,weight=1000 org.apache.tuscany.sca.databinding.saxon.DataObject2NodeInfoTransformer;source=commonj.sdo.DataObject,target=net.sf.saxon.om.NodeInfo,weight=1000 +org.apache.tuscany.sca.databinding.saxon.ItemList2ObjectTransformer;source=org.apache.tuscany.sca.databinding.saxon.collection.ItemList,target=net.sf.saxon.om.NodeInfo,weight=1000 +org.apache.tuscany.sca.databinding.saxon.ItemList2ObjectTransformer;source=org.apache.tuscany.sca.databinding.saxon.collection.ItemList,target=net.sf.saxon.value.Value,weight=1000 +org.apache.tuscany.sca.databinding.saxon.ItemList2ObjectTransformer;source=org.apache.tuscany.sca.databinding.saxon.collection.ItemList,target=commonj.sdo.DataObject,weight=1000 +org.apache.tuscany.sca.databinding.saxon.ItemList2ObjectTransformer;source=org.apache.tuscany.sca.databinding.saxon.collection.ItemList,target=java:complex,weight=1000 +org.apache.tuscany.sca.databinding.saxon.ItemList2ObjectTransformer;source=org.apache.tuscany.sca.databinding.saxon.collection.ItemList,target=java:simple,weight=1000 +org.apache.tuscany.sca.databinding.saxon.ItemList2ObjectTransformer;source=org.apache.tuscany.sca.databinding.saxon.collection.ItemList,target=java:array,weight=1000 |