diff options
Diffstat (limited to 'sdo-java/tags/1.1/lib/src/main/java/org/apache/tuscany/sdo/lib/UnknownPropertyList.java')
-rw-r--r-- | sdo-java/tags/1.1/lib/src/main/java/org/apache/tuscany/sdo/lib/UnknownPropertyList.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sdo-java/tags/1.1/lib/src/main/java/org/apache/tuscany/sdo/lib/UnknownPropertyList.java b/sdo-java/tags/1.1/lib/src/main/java/org/apache/tuscany/sdo/lib/UnknownPropertyList.java new file mode 100644 index 0000000000..95eabd4b82 --- /dev/null +++ b/sdo-java/tags/1.1/lib/src/main/java/org/apache/tuscany/sdo/lib/UnknownPropertyList.java @@ -0,0 +1,70 @@ +/** + * + * 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.sdo.lib; + +import java.util.AbstractList; +import java.util.Collections; +import java.util.List; + +import commonj.sdo.DataObject; + +public class UnknownPropertyList extends AbstractList { + protected List delegateList = Collections.EMPTY_LIST; + protected DataObject dataObject; + protected String path; + + public UnknownPropertyList(DataObject dataObject, String path) { + this.dataObject = dataObject; + this.path = path; + } + + public Object get(int index) { + return getDelegateList().get(index); + } + + public int size() { + return getDelegateList().size(); + } + + public Object remove(int index) { + return getDelegateList().remove(index); + } + public Object set(int index, Object element) { + return getDelegateList().set(index, element); + } + + public void add(int index, Object element) { + if (getDelegateList() == Collections.EMPTY_LIST && index == 0) { + dataObject.set(path, Collections.singletonList(element)); + delegateList = (List)dataObject.get(path); + } + else { + delegateList.add(index, element); + } + } + + protected List getDelegateList() { + if (delegateList == Collections.EMPTY_LIST) { + List propertyList = (List)dataObject.get(path); + if (propertyList != null) delegateList = propertyList; + } + return delegateList; + } +} |