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Central module for Tapestry, containing interfaces to the Java
Servlet API and all core services and components.
// Copyright 2008 The Apache Software Foundation
//
// Licensed 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.tapestry5.internal.services;
/**
* Used with {@link org.apache.tapestry5.internal.services.InternalClassTransformation} to search for prior injections
* of a give type and value. Assumes the values have a reasonable hashCode() implementation.
*/
public final class InjectionKey
{
private final Class type;
private final Object value;
private final int hashCode;
public InjectionKey(Class type, Object value)
{
this.type = type;
this.value = value;
hashCode = type.hashCode() * 31 + value.hashCode();
}
@Override
public int hashCode()
{
return hashCode;
}
@Override
public boolean equals(Object obj)
{
if (obj == null) return false;
if (obj instanceof InjectionKey)
{
InjectionKey other = (InjectionKey) obj;
return type.equals(other.type) &&
value.equals(other.value);
}
return false;
}
@Override
public String toString()
{
return String.format("InjectionKey[%s %s]", type.getName(), value);
}
}