/*
* 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.spi.commons.nodetype.constraint;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import javax.jcr.nodetype.ConstraintViolationException;
import org.apache.jackrabbit.spi.QValue;
import org.apache.jackrabbit.spi.commons.nodetype.InvalidConstraintException;
/**
* <code>NumericConstraint</code> ...
*/
class NumericConstraint extends ValueConstraint {
private final boolean lowerInclusive;
private final Double lowerLimit;
private final boolean upperInclusive;
private final Double upperLimit;
public NumericConstraint(String definition) throws InvalidConstraintException {
super(definition);
// format: '(<min>, <max>)', '[<min>, <max>]', '(, <max>)' etc.
Pattern pattern = Pattern.compile("([\\(\\[]) *(\\-?\\d+\\.?\\d*)? *, *(\\-?\\d+\\.?\\d*)? *([\\)\\]])");
Matcher matcher = pattern.matcher(definition);
if (matcher.matches()) {
try {
// group 1 is lower inclusive/exclusive
String s = matcher.group(1);
lowerInclusive = s.equals("[");
// group 2 is lower limit
s = matcher.group(2);
if (s == null || s.length() == 0) {
lowerLimit = null;
} else {
lowerLimit = Double.valueOf(matcher.group(2));
}
// group 3 is upper limit
s = matcher.group(3);
if (s == null || s.length() == 0) {
upperLimit = null;
} else {
upperLimit = Double.valueOf(matcher.group(3));
}
// group 4 is lower inclusive/exclusive
s = matcher.group(4);
upperInclusive = s.equals("]");
if (lowerLimit == null && upperLimit == null) {
String msg = "'" + definition + "' is not a valid value constraint"
+ " format for numeric types: neither lower- nor upper-limit specified";
log.debug(msg);
throw new InvalidConstraintException(msg);
}
if (lowerLimit != null && upperLimit != null) {
if (lowerLimit > upperLimit) {
String msg = "'" + definition
+ "' is not a valid value constraint format for numeric types: lower-limit exceeds upper-limit";
log.debug(msg);
throw new InvalidConstraintException(msg);
}
}
} catch (NumberFormatException nfe) {
String msg = "'" + definition
+ "' is not a valid value constraint format for numeric types";
log.debug(msg);
throw new InvalidConstraintException(msg, nfe);
}
} else {
String msg = "'" + definition
+ "' is not a valid value constraint format for numeric values";
log.debug(msg);
throw new InvalidConstraintException(msg);
}
}
private void check(double number) throws ConstraintViolationException {
if (lowerLimit != null) {
if (lowerInclusive) {
if (number < lowerLimit) {
throw new ConstraintViolationException(number
+ " does not satisfy the constraint '"
+ getString() + "'");
}
} else {
if (number <= lowerLimit) {
throw new ConstraintViolationException(number
+ " does not satisfy the constraint '"
+ getString() + "'");
}
}
}
if (upperLimit != null) {
if (upperInclusive) {
if (number > upperLimit) {
throw new ConstraintViolationException(number
+ " does not satisfy the constraint '"
+ getString() + "'");
}
} else {
if (number >= upperLimit) {
throw new ConstraintViolationException(number
+ " does not satisfy the constraint '"
+ getString() + "'");
}
}
}
}
/**
* @see org.apache.jackrabbit.spi.QValueConstraint#check(QValue)
*/
public void check(QValue value) throws ConstraintViolationException, RepositoryException {
if (value == null) {
throw new ConstraintViolationException("null value does not satisfy the constraint '"
+ getString() + "'");
}
switch (value.getType()) {
case PropertyType.LONG:
check(value.getLong());
return;
case PropertyType.DOUBLE:
check(value.getDouble());
return;
case PropertyType.DECIMAL:
check(value.getDouble());
return;
case PropertyType.BINARY:
long length = value.getLength();
if (length != -1) {
check(length);
} else {
log.warn("failed to determine length of binary value");
}
return;
default:
String msg = "numeric constraint can not be applied to value of type: "
+ PropertyType.nameFromValue(value.getType());
log.debug(msg);
throw new RepositoryException(msg);
}
}
}