/*
* ModeShape (http://www.modeshape.org)
*
* 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 org.infinispan.schematic.internal.delta;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.infinispan.commons.marshall.SerializeWith;
import org.infinispan.commons.util.Util;
import org.infinispan.schematic.document.Array.Entry;
import org.infinispan.schematic.document.Path;
import org.infinispan.schematic.internal.HashCode;
import org.infinispan.schematic.internal.SchematicExternalizer;
import org.infinispan.schematic.internal.document.BasicArray;
import org.infinispan.schematic.internal.document.MutableArray;
import org.infinispan.schematic.internal.document.MutableDocument;
import org.infinispan.schematic.internal.marshall.Ids;
/**
* An atomic array add operation for SchematicValueDelta.
*
* @author Randall Hauch <rhauch@redhat.com> (C) 2011 Red Hat Inc.
* @since 5.1
*/
@SerializeWith( RemoveAllValuesOperation.Externalizer.class )
public class RemoveAllValuesOperation extends ArrayOperation {
protected final Collection<?> values;
protected transient int[] actualIndexes;
public RemoveAllValuesOperation( Path path,
Collection<?> values ) {
super(path, HashCode.compute(path, values));
this.values = values;
}
@Override
public RemoveAllValuesOperation clone() {
return new RemoveAllValuesOperation(getParentPath(), cloneValues(values));
}
public Collection<?> getValuesToRemove() {
return values;
}
public synchronized List<Entry> getRemovedEntries() {
List<Entry> entries = new ArrayList<Entry>(this.values.size());
Iterator<?> valueIter = values.iterator();
for (int i = 0; i != actualIndexes.length; ++i) {
int index = actualIndexes[i];
Object value = valueIter.next();
entries.add(new BasicArray.BasicEntry(index, value));
}
return entries;
}
@Override
public synchronized void rollback( MutableDocument delegate ) {
if (actualIndexes != null) {
MutableArray array = mutableParent(delegate);
// Add into the same locations ...
int i = 0;
for (Object value : values) {
int index = actualIndexes[i++];
if (index != -1) array.add(index, value);
}
}
}
@Override
public synchronized void replay( MutableDocument delegate ) {
if (!values.isEmpty()) {
actualIndexes = new int[values.size()];
int i = 0;
MutableArray array = mutableParent(delegate);
for (Object value : values) {
int actualIndex = array.indexOf(value);
array.remove(actualIndex);
actualIndexes[i++] = actualIndex;
}
} else {
actualIndexes = null;
}
}
@Override
public int hashCode() {
return super.hashCode();
}
@Override
public String toString() {
return "Remove at '" + parentPath + "' the values: " + values;
}
@Override
public boolean equals( Object obj ) {
if (obj instanceof RemoveAllValuesOperation) {
RemoveAllValuesOperation other = (RemoveAllValuesOperation)obj;
return equalsIfNotNull(values, other.values) && equalsIfNotNull(getParentPath(), other.getParentPath());
}
return false;
}
public static final class Externalizer extends SchematicExternalizer<RemoveAllValuesOperation> {
private static final long serialVersionUID = 1L;
@Override
public void writeObject( ObjectOutput output,
RemoveAllValuesOperation put ) throws IOException {
output.writeObject(put.parentPath);
output.writeObject(put.values);
}
@Override
public RemoveAllValuesOperation readObject( ObjectInput input ) throws IOException, ClassNotFoundException {
Path path = (Path)input.readObject();
Collection<?> values = (Collection<?>)input.readObject();
return new RemoveAllValuesOperation(path, values);
}
@Override
public Integer getId() {
return Ids.SCHEMATIC_VALUE_REMOVE_ALL_VALUES_OPERATION;
}
@SuppressWarnings( "unchecked" )
@Override
public Set<Class<? extends RemoveAllValuesOperation>> getTypeClasses() {
return Util.<Class<? extends RemoveAllValuesOperation>>asSet(RemoveAllValuesOperation.class);
}
}
}