package org.apache.torque.generator.option;
/*
* 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 org.apache.torque.generator.qname.Namespace;
import org.apache.torque.generator.qname.QualifiedName;
/**
* The default implementation of the option Interface. This class is immutable.
*/
public class OptionImpl implements Option
{
/**
* The qualified name of the option, including the name and the context.
*/
private QualifiedName qualifiedName;
/**
* The value of the option.
*/
private Object value;
/**
* Constructs an optionImpl from a namespace, a name and a value.
*
* @param namespace the namespace of the option, may be null.
* @param name the name of the option, must not be empty.
* @param value the value of the option, may be null.
*/
public OptionImpl(String namespace, String name, Object value)
{
this.qualifiedName = new QualifiedName(namespace, name);
this.value = value;
}
/**
* Constructs an OptionImpl from the String representation of
* a QualifiedName and a value.
*
* @param qualifiedName The String representation of the qualified name
* of the option, in the form context:name or name.
* (in the latter case, context is null).
* @param value the value of the option, may be null.
*
* @throws IllegalArgumentException if qualifiedName is not a legal
* QualifiedName.
*/
public OptionImpl(String qualifiedName, Object value)
{
this(new QualifiedName(qualifiedName, Namespace.ROOT_NAMESPACE), value);
}
/**
* Constructs an OptionImpl from a QualifiedaName and a value.
* @param qualifiedName A qualifiedName containing the context
* and the name of the option.
* @param value the value of the option, may be null.
*/
public OptionImpl(QualifiedName qualifiedName, Object value)
{
if (qualifiedName == null)
{
throw new IllegalArgumentException(
"qualifiedName must not be zero");
}
this.qualifiedName = qualifiedName;
this.value = value;
}
/**
* Returns the qualified name of the option.
*
* @return the qualified name of the option, not null.
*/
public QualifiedName getQualifiedName()
{
return qualifiedName;
}
/**
* Retursn the value of the option.
*
* @return the value of the option, may be null.
*/
public Object getValue()
{
return value;
}
/**
* Creates as String representation of this Object for
* debugging purposes.
*
* @return A String representation, not null.
*/
@Override
public String toString()
{
StringBuilder result = new StringBuilder()
.append("(qualifiedName=")
.append(qualifiedName)
.append(", value=")
.append(value)
.append(")");
return result.toString();
}
@Override
public int hashCode()
{
final int prime = 31;
int result = 1;
result = prime * result
+ ((qualifiedName == null) ? 0 : qualifiedName.hashCode());
result = prime * result
+ ((value == null) ? 0 : value.hashCode());
return result;
}
@Override
public boolean equals(Object obj)
{
if (this == obj)
{
return true;
}
if (obj == null)
{
return false;
}
if (getClass() != obj.getClass())
{
return false;
}
final OptionImpl other = (OptionImpl) obj;
if (qualifiedName == null)
{
if (other.qualifiedName != null)
{
return false;
}
}
else if (!qualifiedName.equals(other.qualifiedName))
{
return false;
}
if (value == null)
{
if (other.value != null)
{
return false;
}
}
else if (!value.equals(other.value))
{
return false;
}
return true;
}
}