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.layer0.genericrelation;
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14 import java.util.List;
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16 import org.simantics.db.ReadGraph;
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17 import org.simantics.db.exception.DatabaseException;
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18 import org.simantics.db.layer0.adapter.GenericRelation;
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19 import org.simantics.utils.datastructures.Pair;
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22 * Default implementation for some methods of IRelation interface.
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24 public class UnsupportedRelation implements GenericRelation {
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27 public boolean contains(ReadGraph graph, Object[] tuple) throws DatabaseException {
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28 throw new UnsupportedOperationException();
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32 public boolean isRealizable() {
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33 throw new UnsupportedOperationException();
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37 public List<Object[]> realize(ReadGraph graph) throws DatabaseException {
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38 throw new UnsupportedOperationException();
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42 public GenericRelation select(String bindingPattern, Object[] constants) {
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43 throw new UnsupportedOperationException();
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47 public GenericRelation selectByRelation(String bindingPattern,
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48 GenericRelation constraint) {
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49 throw new UnsupportedOperationException();
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53 public Pair<String, String>[] getFields() {
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54 throw new UnsupportedOperationException();
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57 private Class<?> getClass(String clazz) {
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58 if("Long".equals(clazz)) return Long.class;
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59 else return String.class;
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62 protected void checkSelectionArguments(String bindingPattern, Object[] constants, String[] allowedPatterns) {
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64 boolean allowed = false;
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65 for(String allow : allowedPatterns) {
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66 if(allow.equals(bindingPattern)) {
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72 if(!allowed) throw new IllegalArgumentException("Select does not support binding pattern '" + bindingPattern + "'");
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74 Pair<String, String>[] fields = getFields();
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76 assert(bindingPattern.length() == fields.length);
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77 int constantIndex = 0;
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78 for(int i=0;i<bindingPattern.length();++i) {
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79 Class<?> clazz = getClass(fields[i].second);
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80 switch(bindingPattern.charAt(i)) {
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82 if(!clazz.isInstance(constants[constantIndex++])) throw new IllegalArgumentException("Invalid constant.");
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87 throw new IllegalArgumentException("Invalid binding character '" + bindingPattern.charAt(i) + "'");
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