package org.apache.lucene.queryParser.core.nodes;
/**
* 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.
*/
import java.util.List;
import org.apache.lucene.queryParser.core.nodes.ParametricQueryNode.CompareOperator;
import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;
/**
* A {@link ParametricRangeQueryNode} represents LE, LT, GE, GT, EQ, NE query.
* Example: date >= "2009-10-10" OR price = 200
*/
public class ParametricRangeQueryNode extends QueryNodeImpl implements
RangeQueryNode<ParametricQueryNode> {
private static final long serialVersionUID = 7120958816535573935L;
public ParametricRangeQueryNode(ParametricQueryNode lowerBound,
ParametricQueryNode upperBound) {
if (upperBound.getOperator() != CompareOperator.LE
&& upperBound.getOperator() != CompareOperator.LT) {
throw new IllegalArgumentException("upper bound should have "
+ CompareOperator.LE + " or " + CompareOperator.LT);
}
if (lowerBound.getOperator() != CompareOperator.GE
&& lowerBound.getOperator() != CompareOperator.GT) {
throw new IllegalArgumentException("lower bound should have "
+ CompareOperator.GE + " or " + CompareOperator.GT);
}
if (upperBound.getField() != lowerBound.getField()
|| (upperBound.getField() != null && !upperBound.getField().equals(
lowerBound.getField()))) {
throw new IllegalArgumentException(
"lower and upper bounds should have the same field name!");
}
allocate();
setLeaf(false);
add(lowerBound);
add(upperBound);
}
public ParametricQueryNode getUpperBound() {
return (ParametricQueryNode) getChildren().get(1);
}
public ParametricQueryNode getLowerBound() {
return (ParametricQueryNode) getChildren().get(0);
}
public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) {
return getLowerBound().toQueryString(escapeSyntaxParser) + " AND "
+ getUpperBound().toQueryString(escapeSyntaxParser);
}
public CharSequence getField() {
return getLowerBound().getField();
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("<parametricRange>\n\t");
sb.append(getUpperBound()).append("\n\t");
sb.append(getLowerBound()).append("\n");
sb.append("</parametricRange>\n");
return sb.toString();
}
@Override
public ParametricRangeQueryNode cloneTree() throws CloneNotSupportedException {
ParametricRangeQueryNode clone = (ParametricRangeQueryNode) super
.cloneTree();
// nothing to do here
return clone;
}
public void setField(CharSequence fieldName) {
List<QueryNode> children = getChildren();
if (children != null) {
for (QueryNode child : getChildren()) {
if (child instanceof FieldableNode) {
((FieldableNode) child).setField(fieldName);
}
}
}
}
public boolean isLowerInclusive() {
return getUpperBound().getOperator() == CompareOperator.GE;
}
public boolean isUpperInclusive() {
return getLowerBound().getOperator() == CompareOperator.LE;
}
}