xml/dom-openapi/src/com/intellij/util/xml/model/impl/SimpleDomModelFactory.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.intellij.util.xml.model.impl;
  18
  19 import com.intellij.psi.xml.XmlFile;
  20 import com.intellij.util.containers.ContainerUtil;
  21 import com.intellij.util.xml.DomElement;
  22 import com.intellij.util.xml.DomFileElement;
  23 import com.intellij.util.xml.ModelMerger;
  24 import com.intellij.util.xml.model.DomModel;
  25 import com.intellij.util.xml.model.SimpleModelFactory;
  26 import org.jetbrains.annotations.NotNull;
  27 import org.jetbrains.annotations.Nullable;
  28
  29 import java.util.ArrayList;
  30 import java.util.List;
  31 import java.util.Set;
  32
  33 /**
  34  * @author Dmitry Avdeev
  35  */
  36 public abstract class SimpleDomModelFactory<T extends DomElement, M extends DomModel<T>> extends DomModelFactoryHelper<T> implements
  37                                                                                                                          SimpleModelFactory<T, M> {
  38
  39   public SimpleDomModelFactory(@NotNull Class<T> aClass, @NotNull ModelMerger modelMerger) {
  40     super(aClass, modelMerger);
  41   }
  42
  43   @Nullable
  44   public DomFileElement<T> createMergedModelRoot(Set<XmlFile> configFiles) {
  45     List<DomFileElement<T>> configs = new ArrayList<DomFileElement<T>>(configFiles.size());
  46     for (XmlFile configFile : configFiles) {
  47       ContainerUtil.addIfNotNull(getDomRoot(configFile), configs);
  48     }
  49     return configs.isEmpty() ? null : getModelMerger().mergeModels(DomFileElement.class, configs);
  50   }
  51 }