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/*****************************************************************************
* Copyright (c) 2016 Christian W. Damus and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Christian W. Damus - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.emf.internal.resource.index;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
import java.util.concurrent.Callable;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.QualifiedName;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.papyrus.infra.emf.resource.index.WorkspaceModelIndex;
import com.google.common.util.concurrent.ListenableFuture;
/**
* Internal implementation details of a {@link WorkspaceModelIndex}.
*/
public abstract class InternalModelIndex {
private final QualifiedName indexKey;
private final int maxIndexJobs;
/** My manager. */
private IndexManager manager;
/** A class loader that knows the classes of the owner (bundle) context. */
private ClassLoader ownerClassLoader;
/**
* Initializes me.
*/
public InternalModelIndex(QualifiedName indexKey, int maxIndexJobs) {
super();
this.indexKey = indexKey;
this.maxIndexJobs = maxIndexJobs;
}
/**
* Initializes me.
*/
public InternalModelIndex(QualifiedName indexKey) {
this(indexKey, 0);
}
public final QualifiedName getIndexKey() {
return indexKey;
}
public final int getMaxIndexJobs() {
return maxIndexJobs;
}
protected final IContentType[] getContentTypes(IFile file) {
return manager.getContentTypes(file);
}
/**
* Obtains an asynchronous future result that is scheduled to run after
* any pending indexing work has completed.
*
* @param callable
* the operation to schedule
*
* @return the future result of the operation
*/
protected <V> ListenableFuture<V> afterIndex(final Callable<V> callable) {
return manager.afterIndex(this, callable);
}
void setOwnerClassLoader(ClassLoader ownerClassLoader) {
this.ownerClassLoader = ownerClassLoader;
}
protected final ObjectInputStream createObjectInput(InputStream underlying) throws IOException {
return (ownerClassLoader == null)
? new ObjectInputStream(underlying)
: new ObjectInputStream(underlying) {
@Override
protected Class<?> resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException {
return Class.forName(desc.getName(), true, ownerClassLoader);
}
};
}
protected abstract void dispose();
void start(IndexManager manager) {
this.manager = manager;
start();
}
protected abstract void start();
protected abstract boolean match(IFile file);
protected abstract void process(IFile file) throws CoreException;
protected abstract void remove(IProject project, IFile file) throws CoreException;
protected abstract void remove(IProject project) throws CoreException;
}
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