/*
* Copyright 2003-2011 JetBrains s.r.o.
*
* Licensed 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 jetbrains.mps.ide.findusages.view.treeholder.tree;
import jetbrains.mps.ide.findusages.CantLoadSomethingException;
import jetbrains.mps.ide.findusages.CantSaveSomethingException;
import jetbrains.mps.ide.findusages.IExternalizeable;
import jetbrains.mps.ide.findusages.view.treeholder.tree.nodedatatypes.BaseNodeData;
import jetbrains.mps.ide.findusages.view.treeholder.tree.nodedatatypes.ModelNodeData;
import jetbrains.mps.ide.findusages.view.treeholder.tree.nodedatatypes.NodeNodeData;
import jetbrains.mps.project.Project;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.jdom.Element;
import org.jetbrains.mps.openapi.model.SModel;
import org.jetbrains.mps.openapi.model.SModelReference;
import org.jetbrains.mps.openapi.model.SNodeReference;
import org.jetbrains.mps.openapi.module.SRepository;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.stream.Stream;
public class DataNode implements IExternalizeable {
private static final Logger LOG = LogManager.getLogger(DataNode.class);
private static final String CHILDREN = "children";
private static final String CHILD = "child";
private static final String DATA = "data";
private static final String DATA_CLASS = "data_class";
private BaseNodeData myData;
private ArrayList<DataNode> myChildren = new ArrayList<DataNode>();
public DataNode(BaseNodeData data) {
myData = data;
}
public DataNode(Element element, Project project) throws CantLoadSomethingException {
read(element, project);
}
public BaseNodeData getData() {
return myData;
}
public boolean containsNodes(Class dataClass) {
return getNodeDataStream().anyMatch(dataClass::isInstance);
}
//-------DATA QUERY--------
// flatten elements associated with the node and its children, recursively.
/*package*/ Stream<BaseNodeData> getNodeDataStream() {
return Stream.concat(Stream.of(myData), myChildren.stream().flatMap(DataNode::getNodeDataStream));
}
private static Set<SModel> resolve(Stream<SModelReference> models, SRepository repo) {
return new HashSet<>(Arrays.asList(models.map(modelReference -> modelReference.resolve(repo)).filter(m -> m != null).toArray(SModel[]::new)));
}
public Set<SModel> getIncludedModels(SRepository repo) {
return resolve(getNodeDataStream().filter(nd -> nd instanceof ModelNodeData && !nd.isInvalid() && !nd.isExcluded()).map(
nd -> ((ModelNodeData) nd).getModelReference()), repo);
}
public Set<SModel> getAllModels(SRepository repo) {
return resolve(getNodeDataStream().filter(nd -> nd instanceof ModelNodeData).map(nd -> ((ModelNodeData) nd).getModelReference()), repo);
}
public List<SNodeReference> getIncludedResultNodes() {
return Arrays.asList(getNodeDataStream().filter(nd -> nd instanceof NodeNodeData && !nd.isInvalid() && !nd.isExcluded() && nd.isResultNode()).map(nd -> ((NodeNodeData) nd).getNodePointer()).toArray(SNodeReference[]::new));
}
public List<SNodeReference> getAllResultNodes() {
return Arrays.asList(getNodeDataStream().filter(nd -> nd instanceof NodeNodeData && nd.isResultNode()).map(nd -> ((NodeNodeData) nd).getNodePointer()).toArray(SNodeReference[]::new));
}
//-------CHILD MANIPULATION--------
public void add(DataNode o) {
myChildren.add(o);
}
public List<DataNode> getChildren() {
return Collections.unmodifiableList(myChildren);
}
//-------PERSISTENCE--------
@Override
public void read(Element element, Project project) throws CantLoadSomethingException {
Element dataXML = element.getChild(DATA);
String dataClass = dataXML.getAttributeValue(DATA_CLASS);
try {
Class<?> cls = Class.forName(dataClass);
myData = (BaseNodeData) cls.getConstructor(Element.class, Project.class).newInstance(dataXML, project);
} catch (InvocationTargetException e) {
if (e.getCause() instanceof CantLoadSomethingException) {
throw (CantLoadSomethingException) e.getCause();
} else {
throwLoadException(e);
}
} catch (ClassNotFoundException e) {
throwLoadException(e);
} catch (NoSuchMethodException e) {
throwLoadException(e);
} catch (IllegalAccessException e) {
throwLoadException(e);
} catch (InstantiationException e) {
throwLoadException(e);
}
myChildren.clear();
Element childrenXML = element.getChild(CHILDREN);
for (Element nodeXML : (List<Element>) childrenXML.getChildren(CHILD)) {
myChildren.add(new DataNode(nodeXML, project));
}
}
@Override
public void write(Element element, Project project) throws CantSaveSomethingException {
Element dataXML = new Element(DATA);
dataXML.setAttribute(DATA_CLASS, myData.getClass().getName());
myData.write(dataXML, project);
element.addContent(dataXML);
Element childrenXML = new Element(CHILDREN);
for (DataNode node : getChildren()) {
Element childXML = new Element(CHILD);
node.write(childXML, project);
childrenXML.addContent(childXML);
}
element.addContent(childrenXML);
}
private void throwLoadException(Throwable t) throws CantLoadSomethingException {
LOG.warn("can't instantiate node", t);
throw new CantLoadSomethingException("can't instantiate node", t);
}
}