1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.common.request;
14 import org.simantics.db.ReadGraph;
15 import org.simantics.db.exception.DatabaseException;
16 import org.simantics.db.request.Read;
18 public abstract class BinaryParametrizedRead<P, C, C2, R> implements ParametrizedRead<P, R> {
20 final protected C constant;
21 final protected C2 constant2;
23 public BinaryParametrizedRead(C constant, C2 constant2) {
24 this.constant = constant;
25 this.constant2 = constant2;
28 abstract public R perform(ReadGraph graph, P parameter) throws DatabaseException;
31 public Read<R> get(P parameter) {
32 return new TernaryRead<P, C, C2, R>(parameter, constant, constant2) {
35 public R perform(ReadGraph graph) throws DatabaseException {
36 return BinaryParametrizedRead.this.perform(graph, parameter);