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ComponentRegistry.java
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ComponentRegistry.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.impl.proc;
import java.util.HashMap;
import java.util.Map;
import org.neo4j.function.ThrowingFunction;
import org.neo4j.kernel.api.exceptions.ProcedureException;
import org.neo4j.kernel.api.proc.CallableProcedure;
/**
* Tracks components that can be injected into user-defined procedures.
*/
public class ComponentRegistry
{
private final Map<Class<?>, ThrowingFunction<CallableProcedure.Context, ?,ProcedureException>> suppliers;
public ComponentRegistry()
{
this( new HashMap<>() );
}
public ComponentRegistry( Map<Class<?>,ThrowingFunction<CallableProcedure.Context, ?,ProcedureException>> suppliers )
{
this.suppliers = suppliers;
}
public ThrowingFunction<CallableProcedure.Context, ?,ProcedureException> supplierFor( Class<?> type )
{
return suppliers.get( type );
}
public <T> void register( Class<T> cls, ThrowingFunction<CallableProcedure.Context, ?,ProcedureException> supplier )
{
suppliers.put( cls, supplier );
}
}