org.apache.jackrabbit.value.DoubleValue Maven / Gradle / Ivy
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/*
* 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.value;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import javax.jcr.ValueFormatException;
import java.util.Calendar;
import java.util.Date;
import java.math.BigDecimal;
/**
* A DoubleValue provides an implementation
* of the Value interface representing a double value.
*/
public class DoubleValue extends BaseValue {
public static final int TYPE = PropertyType.DOUBLE;
private final Double dblNumber;
/**
* Constructs a DoubleValue object representing a double.
*
* @param dblNumber the double this DoubleValue should represent
*/
public DoubleValue(Double dblNumber) {
super(TYPE);
this.dblNumber = dblNumber;
}
/**
* Constructs a DoubleValue object representing a double.
*
* @param dbl the double this DoubleValue should represent
*/
public DoubleValue(double dbl) {
super(TYPE);
this.dblNumber = dbl;
}
/**
* Returns a new DoubleValue initialized to the value
* represented by the specified String.
*
* @param s the string to be parsed.
* @return a newly constructed DoubleValue representing the
* the specified value.
* @throws javax.jcr.ValueFormatException If the String does not
* contain a parsable double.
*/
public static DoubleValue valueOf(String s) throws ValueFormatException {
try {
return new DoubleValue(Double.parseDouble(s));
} catch (NumberFormatException e) {
throw new ValueFormatException("not a valid double format: " + s, e);
}
}
/**
* Indicates whether some other object is "equal to" this one.
*
* The result is true if and only if the argument is not
* null and is a DoubleValue object that
* represents the same value as this object.
*
* @param obj the reference object with which to compare.
* @return true if this object is the same as the obj
* argument; false otherwise.
*/
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof DoubleValue) {
DoubleValue other = (DoubleValue) obj;
if (dblNumber == other.dblNumber) {
return true;
} else if (dblNumber != null && other.dblNumber != null) {
return dblNumber.equals(other.dblNumber);
}
}
return false;
}
/**
* Returns zero to satisfy the Object equals/hashCode contract.
* This class is mutable and not meant to be used as a hash key.
*
* @return always zero
* @see Object#hashCode()
*/
public int hashCode() {
return 0;
}
//------------------------------------------------------------< BaseValue >
/**
* {@inheritDoc}
*/
protected String getInternalString() throws ValueFormatException {
if (dblNumber != null) {
return dblNumber.toString();
} else {
throw new ValueFormatException("empty value");
}
}
//----------------------------------------------------------------< Value >
/**
* {@inheritDoc}
*/
public Calendar getDate()
throws ValueFormatException, IllegalStateException,
RepositoryException {
if (dblNumber != null) {
// loosing timezone information...
Calendar cal = Calendar.getInstance();
cal.setTime(new Date(dblNumber.longValue()));
return cal;
} else {
throw new ValueFormatException("empty value");
}
}
/**
* {@inheritDoc}
*/
public long getLong()
throws ValueFormatException, IllegalStateException,
RepositoryException {
if (dblNumber != null) {
return dblNumber.longValue();
} else {
throw new ValueFormatException("empty value");
}
}
/**
* {@inheritDoc}
*/
public boolean getBoolean()
throws ValueFormatException, IllegalStateException,
RepositoryException {
throw new ValueFormatException("conversion to boolean failed: inconvertible types");
}
/**
* {@inheritDoc}
*/
public double getDouble()
throws ValueFormatException, IllegalStateException,
RepositoryException {
if (dblNumber != null) {
return dblNumber;
} else {
throw new ValueFormatException("empty value");
}
}
/**
* {@inheritDoc}
*/
public BigDecimal getDecimal()
throws ValueFormatException, IllegalStateException,
RepositoryException {
if (dblNumber != null) {
return new BigDecimal(dblNumber);
} else {
throw new ValueFormatException("empty value");
}
}
}