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Merged DEV/SWIFT to HEAD
25458: added OpenCMIS server 25555: Don't initialize servlet context if it is not present git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@28000 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Derek Hulley
414
source/java/org/alfresco/opencmis/search/CMISFTSQueryParser.java
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414
source/java/org/alfresco/opencmis/search/CMISFTSQueryParser.java
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/*
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* Copyright (C) 2005-2010 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.opencmis.search;
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import java.util.ArrayList;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import org.alfresco.repo.search.impl.lucene.AnalysisMode;
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import org.alfresco.repo.search.impl.parsers.CMIS_FTSLexer;
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import org.alfresco.repo.search.impl.parsers.CMIS_FTSParser;
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import org.alfresco.repo.search.impl.parsers.FTSQueryException;
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import org.alfresco.repo.search.impl.querymodel.Argument;
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import org.alfresco.repo.search.impl.querymodel.Column;
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import org.alfresco.repo.search.impl.querymodel.Constraint;
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import org.alfresco.repo.search.impl.querymodel.Function;
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import org.alfresco.repo.search.impl.querymodel.FunctionEvaluationContext;
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import org.alfresco.repo.search.impl.querymodel.LiteralArgument;
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import org.alfresco.repo.search.impl.querymodel.QueryModelFactory;
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import org.alfresco.repo.search.impl.querymodel.Selector;
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import org.alfresco.repo.search.impl.querymodel.Constraint.Occur;
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import org.alfresco.repo.search.impl.querymodel.QueryOptions.Connective;
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import org.alfresco.repo.search.impl.querymodel.impl.functions.FTSPhrase;
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import org.alfresco.repo.search.impl.querymodel.impl.functions.FTSTerm;
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import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
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import org.antlr.runtime.ANTLRStringStream;
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import org.antlr.runtime.CharStream;
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import org.antlr.runtime.CommonTokenStream;
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import org.antlr.runtime.RecognitionException;
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import org.antlr.runtime.Token;
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import org.antlr.runtime.tree.CommonTree;
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import org.antlr.runtime.tree.Tree;
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public class CMISFTSQueryParser
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{
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static public Constraint buildFTS(String ftsExpression, QueryModelFactory factory, FunctionEvaluationContext functionEvaluationContext, Selector selector,
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Map<String, Column> columnMap, String defaultField)
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{
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// TODO: Decode sql escape for '' should do in CMIS layer
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// parse templates to trees ...
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CMIS_FTSParser parser = null;
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try
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{
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CharStream cs = new ANTLRStringStream(ftsExpression);
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CMIS_FTSLexer lexer = new CMIS_FTSLexer(cs);
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CommonTokenStream tokens = new CommonTokenStream(lexer);
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parser = new CMIS_FTSParser(tokens);
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CommonTree ftsNode = (CommonTree) parser.cmisFtsQuery().getTree();
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return buildFTSConnective(ftsNode, factory, functionEvaluationContext, selector, columnMap, defaultField);
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}
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catch (RecognitionException e)
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{
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if (parser != null)
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{
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String[] tokenNames = parser.getTokenNames();
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String hdr = parser.getErrorHeader(e);
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String msg = parser.getErrorMessage(e, tokenNames);
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throw new FTSQueryException(hdr + "\n" + msg, e);
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}
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return null;
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}
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}
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static private Constraint buildFTSConnective(CommonTree node, QueryModelFactory factory, FunctionEvaluationContext functionEvaluationContext,
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Selector selector, Map<String, Column> columnMap, String defaultField)
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{
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Connective connective;
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switch (node.getType())
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{
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case CMIS_FTSParser.DISJUNCTION:
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connective = Connective.OR;
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break;
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case CMIS_FTSParser.CONJUNCTION:
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connective = Connective.AND;
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break;
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default:
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throw new FTSQueryException("Invalid connective ..." + node.getText());
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}
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List<Constraint> constraints = new ArrayList<Constraint>(node.getChildCount());
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CommonTree testNode;
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for (int i = 0; i < node.getChildCount(); i++)
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{
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CommonTree subNode = (CommonTree) node.getChild(i);
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Constraint constraint;
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switch (subNode.getType())
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{
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case CMIS_FTSParser.DISJUNCTION:
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case CMIS_FTSParser.CONJUNCTION:
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constraint = buildFTSConnective(subNode, factory, functionEvaluationContext, selector, columnMap, defaultField);
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break;
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case CMIS_FTSParser.DEFAULT:
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testNode = (CommonTree) subNode.getChild(0);
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constraint = buildFTSTest(testNode, factory, functionEvaluationContext, selector, columnMap, defaultField);
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constraint.setOccur(Occur.DEFAULT);
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break;
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case CMIS_FTSParser.EXCLUDE:
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testNode = (CommonTree) subNode.getChild(0);
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constraint = buildFTSTest(testNode, factory, functionEvaluationContext, selector, columnMap, defaultField);
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constraint.setOccur(Occur.EXCLUDE);
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break;
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default:
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throw new FTSQueryException("Unsupported FTS option " + subNode.getText());
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}
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constraints.add(constraint);
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}
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if (constraints.size() == 1)
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{
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return constraints.get(0);
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}
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else
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{
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if (connective == Connective.OR)
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{
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return factory.createDisjunction(constraints);
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}
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else
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{
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return factory.createConjunction(constraints);
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}
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}
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}
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static private Constraint buildFTSTest(CommonTree argNode, QueryModelFactory factory, FunctionEvaluationContext functionEvaluationContext,
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Selector selector, Map<String, Column> columnMap, String defaultField)
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{
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CommonTree testNode = argNode;
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switch (testNode.getType())
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{
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case CMIS_FTSParser.DISJUNCTION:
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case CMIS_FTSParser.CONJUNCTION:
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return buildFTSConnective(testNode, factory, functionEvaluationContext, selector, columnMap, defaultField);
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case CMIS_FTSParser.TERM:
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return buildTerm(testNode, factory, functionEvaluationContext, selector, columnMap);
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case CMIS_FTSParser.PHRASE:
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return buildPhrase(testNode, factory, functionEvaluationContext, selector, columnMap);
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default:
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throw new FTSQueryException("Unsupported FTS option " + testNode.getText());
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}
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}
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static private Constraint buildPhrase(CommonTree testNode, QueryModelFactory factory,
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FunctionEvaluationContext functionEvaluationContext, Selector selector, Map<String, Column> columnMap)
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{
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String functionName = FTSPhrase.NAME;
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Function function = factory.getFunction(functionName);
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Map<String, Argument> functionArguments = new LinkedHashMap<String, Argument>();
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LiteralArgument larg = factory.createLiteralArgument(FTSPhrase.ARG_PHRASE, DataTypeDefinition.TEXT, getText(testNode.getChild(0)));
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functionArguments.put(larg.getName(), larg);
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return factory.createFunctionalConstraint(function, functionArguments);
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}
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static private Constraint buildTerm(CommonTree testNode, QueryModelFactory factory, FunctionEvaluationContext functionEvaluationContext,
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Selector selector, Map<String, Column> columnMap)
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{
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String functionName = FTSTerm.NAME;
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Function function = factory.getFunction(functionName);
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Map<String, Argument> functionArguments = new LinkedHashMap<String, Argument>();
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LiteralArgument larg = factory.createLiteralArgument(FTSTerm.ARG_TERM, DataTypeDefinition.TEXT, getText(testNode.getChild(0)));
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functionArguments.put(larg.getName(), larg);
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larg = factory.createLiteralArgument(FTSTerm.ARG_TOKENISATION_MODE, DataTypeDefinition.ANY, AnalysisMode.DEFAULT);
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functionArguments.put(larg.getName(), larg);
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return factory.createFunctionalConstraint(function, functionArguments);
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}
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static class DisjunctionToken implements Token
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{
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public int getChannel()
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{
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return 0;
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}
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public int getCharPositionInLine()
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{
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return 0;
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}
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public CharStream getInputStream()
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{
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return null;
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}
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public int getLine()
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{
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return 0;
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}
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public String getText()
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{
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return null;
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}
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public int getTokenIndex()
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{
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return 0;
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}
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public int getType()
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{
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return CMIS_FTSParser.DISJUNCTION;
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}
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public void setChannel(int arg0)
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{
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}
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public void setCharPositionInLine(int arg0)
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{
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}
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public void setInputStream(CharStream arg0)
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{
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}
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public void setLine(int arg0)
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{
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}
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public void setText(String arg0)
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{
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}
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public void setTokenIndex(int arg0)
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{
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}
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public void setType(int arg0)
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{
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}
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}
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static class DefaultToken implements Token
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{
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public int getChannel()
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{
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return 0;
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}
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public int getCharPositionInLine()
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{
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return 0;
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}
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public CharStream getInputStream()
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{
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return null;
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}
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public int getLine()
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{
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return 0;
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}
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public String getText()
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{
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return null;
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}
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public int getTokenIndex()
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{
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return 0;
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}
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public int getType()
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{
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return CMIS_FTSParser.DEFAULT;
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}
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public void setChannel(int arg0)
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{
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}
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public void setCharPositionInLine(int arg0)
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{
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}
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public void setInputStream(CharStream arg0)
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{
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}
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public void setLine(int arg0)
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{
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}
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public void setText(String arg0)
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{
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}
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public void setTokenIndex(int arg0)
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{
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}
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public void setType(int arg0)
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{
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}
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}
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static private String getText(Tree node)
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{
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String text = node.getText();
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int index;
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switch (node.getType())
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{
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case CMIS_FTSParser.FTSWORD:
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index = text.indexOf('\\');
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if (index == -1)
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{
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return text;
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}
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else
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{
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return unescape(text);
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}
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case CMIS_FTSParser.FTSPHRASE:
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String phrase = text.substring(1, text.length() - 1);
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index = phrase.indexOf('\\');
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if (index == -1)
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{
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return phrase;
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}
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else
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{
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return unescape(phrase);
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}
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default:
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return text;
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}
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}
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static private String unescape(String string)
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{
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StringBuilder builder = new StringBuilder(string.length());
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boolean lastWasEscape = false;
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for (int i = 0; i < string.length(); i++)
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{
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char c = string.charAt(i);
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if (lastWasEscape)
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{
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if (c == 'u')
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{
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throw new UnsupportedOperationException(string);
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}
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else
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{
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builder.append(c);
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}
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lastWasEscape = false;
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}
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else
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{
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if (c == '\\')
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{
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lastWasEscape = true;
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}
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else
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{
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builder.append(c);
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}
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}
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}
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if (lastWasEscape)
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{
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throw new FTSQueryException("Escape character at end of string " + string);
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}
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return builder.toString();
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}
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}
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