/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.jackrabbit.core.query.lucene.join;
import java.util.Map;
import java.util.Set;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import javax.jcr.query.Row;
import javax.jcr.query.qom.PropertyValue;
public class JoinRow extends AbstractRow {
private final Row leftRow;
private final Set<String> leftSelectors;
private final Row rightRow;
private final Set<String> rightSelectors;
public JoinRow(
Map<String, PropertyValue> columns, OperandEvaluator evaluator,
Row leftRow, Set<String> leftSelectors,
Row rightRow, Set<String> rightSelectors) {
super(columns, evaluator);
this.leftRow = leftRow;
this.leftSelectors = leftSelectors;
this.rightRow = rightRow;
this.rightSelectors = rightSelectors;
}
public Node getNode() throws RepositoryException {
throw new RepositoryException();
}
public Node getNode(String selectorName) throws RepositoryException {
Row row = getRow(selectorName);
if (row != null) {
return row.getNode(selectorName);
} else {
return null;
}
}
public double getScore() throws RepositoryException {
throw new RepositoryException();
}
public double getScore(String selectorName) throws RepositoryException {
Row row = getRow(selectorName);
if (row != null) {
return row.getScore(selectorName);
} else {
return 0.0;
}
}
private Row getRow(String selector) throws RepositoryException {
if (leftSelectors.contains(selector)) {
return leftRow;
} else if (rightSelectors.contains(selector)) {
return rightRow;
} else {
throw new RepositoryException(
"Selector " + selector + " is not included in this row");
}
}
//--------------------------------------------------------------< Object >
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("{ ");
for (String selector : leftSelectors) {
builder.append(selector);
builder.append("=");
try {
builder.append(leftRow.getNode(selector));
} catch (RepositoryException e) {
builder.append(e.getMessage());
}
builder.append(" ");
}
for (String selector : rightSelectors) {
builder.append(selector);
builder.append("=");
try {
builder.append(rightRow.getNode(selector));
} catch (RepositoryException e) {
builder.append(e.getMessage());
}
builder.append(" ");
}
builder.append("}");
return builder.toString();
}
}