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