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/*******************************************************************************
* Copyright (c) 2013 Boeing.
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.orcs.core.internal.util;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.osee.framework.jdk.core.type.OseeCoreException;
import org.eclipse.osee.framework.jdk.core.type.ResultSet;
import com.google.common.base.Predicate;
import com.google.common.collect.LinkedHashMultimap;
import com.google.common.collect.Multimap;
import com.google.common.collect.Multimaps;
/**
* @author Roberto E. Escobar
*/
public abstract class FilterableCollection<MATCH_DATA, KEY, DATA> {
private final Multimap<KEY, DATA> map;
protected FilterableCollection(Multimap<KEY, DATA> map) {
super();
this.map = map;
}
protected FilterableCollection() {
this(Multimaps.synchronizedMultimap(LinkedHashMultimap.<KEY, DATA> create()));
}
protected abstract ResultSet<DATA> createResultSet(List<DATA> values);
protected abstract <T extends DATA> ResultSet<T> createResultSet(KEY attributeType, List<T> values);
public void add(KEY type, DATA data) {
map.put(type, data);
}
public void remove(KEY type, DATA data) {
map.remove(type, data);
}
public Collection<DATA> getAll() {
return map.values();
}
public Collection<DATA> getAllByType(KEY type) {
return map.get(type);
}
protected List<DATA> getListByFilter(Predicate<MATCH_DATA> matcher) throws OseeCoreException {
return getListByFilter(getAll(), matcher);
}
protected ResultSet<DATA> getResultSetByFilter(Predicate<MATCH_DATA> matcher) throws OseeCoreException {
return getResultSetByFilter(getAll(), matcher);
}
protected <T extends DATA> ResultSet<T> getSetByFilter(KEY type, Predicate<MATCH_DATA> matcher) throws OseeCoreException {
List<T> result = getListByFilter(type, matcher);
ResultSet<T> resultSet = createResultSet(type, result);
return resultSet;
}
protected <T extends DATA> List<T> getListByFilter(KEY type, Predicate<MATCH_DATA> matcher) throws OseeCoreException {
return getListByFilter(getAllByType(type), matcher);
}
protected boolean hasItemMatchingFilter(Predicate<MATCH_DATA> matcher) {
return hasItemMatchingFilter(getAll(), matcher);
}
protected boolean hasItemMatchingFilter(KEY type, Predicate<MATCH_DATA> matcher) {
return hasItemMatchingFilter(getAllByType(type), matcher);
}
private ResultSet<DATA> getResultSetByFilter(Collection<DATA> source, Predicate<MATCH_DATA> matcher) throws OseeCoreException {
List<DATA> values = getListByFilter(source, matcher);
return createResultSet(values);
}
@SuppressWarnings({"unchecked", "unused"})
private <T extends DATA> List<T> getListByFilter(Collection<DATA> source, Predicate<MATCH_DATA> matcher) throws OseeCoreException {
List<T> toReturn;
if (source != null && !source.isEmpty()) {
toReturn = new LinkedList<T>();
for (Iterator<DATA> iterator = source.iterator(); iterator.hasNext();) {
DATA data = iterator.next();
if (isValid(data)) {
MATCH_DATA toMatch = asMatcherData(data);
if (matcher.apply(toMatch)) {
toReturn.add((T) data);
}
} else {
iterator.remove();
}
}
} else {
toReturn = Collections.emptyList();
}
return toReturn;
}
private boolean hasItemMatchingFilter(Collection<DATA> source, Predicate<MATCH_DATA> matcher) {
boolean result = false;
if (source != null && !source.isEmpty()) {
for (Iterator<DATA> iterator = source.iterator(); iterator.hasNext();) {
DATA data = iterator.next();
if (isValid(data)) {
MATCH_DATA toMatch = asMatcherData(data);
if (matcher.apply(toMatch)) {
result = true;
break;
}
} else {
iterator.remove();
}
}
}
return result;
}
protected boolean isValid(DATA data) {
return true;
}
protected abstract MATCH_DATA asMatcherData(DATA data);
@Override
public String toString() {
return "FilterableCollection [map=" + map + "]";
}
}
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