[Tmapi-utils-commits] tmapi-utils/src/org/tmapiutils/query/tolog/memory PreparedQueryImpl.java,1.2,1.3 QueryEvaluatorImpl.java,1.2,1.3

[Lars H. <lh...@us...>]

Update of /cvsroot/tmapi-utils/tmapi-utils/src/org/tmapiutils/query/tolog/memory
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv30131/src/org/tmapiutils/query/tolog/memory

Modified Files:
	PreparedQueryImpl.java QueryEvaluatorImpl.java 
Log Message:
Tabs -> Whitespaces

Index: PreparedQueryImpl.java
===================================================================
RCS file: /cvsroot/tmapi-utils/tmapi-utils/src/org/tmapiutils/query/tolog/memory/PreparedQueryImpl.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** PreparedQueryImpl.java	8 Mar 2005 12:33:40 -0000	1.2
--- PreparedQueryImpl.java	8 Jul 2005 16:03:19 -0000	1.3
***************
*** 1,67 ****
! /*
!  * Copyright 2005 TMAPI Utils / Kal Ahmed, Lars Heuer
!  * Copyright (c) 2000-2004 The TM4J Project. All rights reserved.
!  *
!  * Licensed under the Apache License, Version 2.0 (the "License");
!  * you may not use this file except in compliance with the License.
!  * You may obtain a copy of the License at
!  *
!  *      http://www.apache.org/licenses/LICENSE-2.0
!  *
!  * Unless required by applicable law or agreed to in writing, software
!  * distributed under the License is distributed on an "AS IS" BASIS,
!  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
!  * See the License for the specific language governing permissions and
!  * limitations under the License.
!  */
! 
! package org.tmapiutils.query.tolog.memory;
! 
! import org.tmapiutils.query.tolog.TologResultsSet;
! import org.tmapiutils.query.tolog.PreparedQuery;
! import org.tmapiutils.query.tolog.TologProcessingException;
! import org.tmapiutils.query.tolog.parser.TologQuery;
! 
! /**
!  *
!  * @author Kal Ahmed (kal[at]techquila.com)
!  * @author Lars Heuer (heuer[at]semagia.com)
!  */
! public class PreparedQueryImpl implements PreparedQuery {
! 
! 	private TologQuery m_query;
! 
! 	public PreparedQueryImpl(TologQuery q) {
! 		m_query = q;
! 		rewrite();
! 	}
! 
! 	/**
! 	 * Rewrite the query for optimisation purposes
! 	 */
! 	private void rewrite() {
! 		// TODO Implement query rewriting optimisation strategy.
! 	}
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.PreparedQuery#getQueryString()
! 	 */
! 	public String getQueryString() {
! 		return m_query.toString();
! 	}
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.PreparedQuery#execute()
! 	 */
! 	public TologResultsSet execute() throws TologProcessingException {
! 		return m_query.execute();
! 	}
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.PreparedQuery#execute(java.lang.Object[])
!      */
!     public TologResultsSet execute(Object[] params) throws TologProcessingException {
!         return m_query.execute(params);
!     }
! 
! }
--- 1,67 ----
! /*
!  * Copyright 2005 TMAPI Utils / Kal Ahmed, Lars Heuer
!  * Copyright (c) 2000-2004 The TM4J Project. All rights reserved.
!  *
!  * Licensed under the Apache License, Version 2.0 (the "License");
!  * you may not use this file except in compliance with the License.
!  * You may obtain a copy of the License at
!  *
!  *      http://www.apache.org/licenses/LICENSE-2.0
!  *
!  * Unless required by applicable law or agreed to in writing, software
!  * distributed under the License is distributed on an "AS IS" BASIS,
!  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
!  * See the License for the specific language governing permissions and
!  * limitations under the License.
!  */
! 
! package org.tmapiutils.query.tolog.memory;
! 
! import org.tmapiutils.query.tolog.TologResultsSet;
! import org.tmapiutils.query.tolog.PreparedQuery;
! import org.tmapiutils.query.tolog.TologProcessingException;
! import org.tmapiutils.query.tolog.parser.TologQuery;
! 
! /**
!  *
!  * @author Kal Ahmed (kal[at]techquila.com)
!  * @author Lars Heuer (heuer[at]semagia.com)
!  */
! public class PreparedQueryImpl implements PreparedQuery {
! 
!     private TologQuery m_query;
! 
!     public PreparedQueryImpl(TologQuery q) {
!         m_query = q;
!         rewrite();
!     }
! 
!     /**
!      * Rewrite the query for optimisation purposes
!      */
!     private void rewrite() {
!         // TODO Implement query rewriting optimisation strategy.
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.PreparedQuery#getQueryString()
!      */
!     public String getQueryString() {
!         return m_query.toString();
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.PreparedQuery#execute()
!      */
!     public TologResultsSet execute() throws TologProcessingException {
!         return m_query.execute();
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.PreparedQuery#execute(java.lang.Object[])
!      */
!     public TologResultsSet execute(Object[] params) throws TologProcessingException {
!         return m_query.execute(params);
!     }
! 
! }

Index: QueryEvaluatorImpl.java
===================================================================
RCS file: /cvsroot/tmapi-utils/tmapi-utils/src/org/tmapiutils/query/tolog/memory/QueryEvaluatorImpl.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** QueryEvaluatorImpl.java	8 Mar 2005 12:33:40 -0000	1.2
--- QueryEvaluatorImpl.java	8 Jul 2005 16:03:19 -0000	1.3
***************
*** 1,209 ****
! /*
!  * Copyright 2005 TMAPI Utils / Kal Ahmed, Lars Heuer
!  * Copyright (c) 2000-2004 The TM4J Project. All rights reserved.
!  *
!  * Licensed under the Apache License, Version 2.0 (the "License");
!  * you may not use this file except in compliance with the License.
!  * You may obtain a copy of the License at
!  *
!  *      http://www.apache.org/licenses/LICENSE-2.0
!  *
!  * Unless required by applicable law or agreed to in writing, software
!  * distributed under the License is distributed on an "AS IS" BASIS,
!  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
!  * See the License for the specific language governing permissions and
!  * limitations under the License.
!  */
! 
! package org.tmapiutils.query.tolog.memory;
! 
! import java.io.IOException;
! import java.io.InputStream;
! import java.io.StringReader;
! import java.util.HashMap;
! import java.util.Map;
! 
! import org.tmapiutils.query.tolog.TologResultsSet;
! import org.tmapiutils.query.tolog.PreparedQuery;
! import org.tmapiutils.query.tolog.QueryEvaluator;
! import org.tmapiutils.query.tolog.TologParserException;
! import org.tmapiutils.query.tolog.TologProcessingException;
! import org.tmapiutils.query.tolog.parser.Predicate;
! import org.tmapiutils.query.tolog.parser.TologLexer;
! import org.tmapiutils.query.tolog.parser.TologParser;
! import org.tmapiutils.query.tolog.parser.TologQuery;
! import org.tmapiutils.query.tolog.parser.TologRule;
! import org.tmapiutils.query.tolog.predicates.AssociationPredicate;
! import org.tmapiutils.query.tolog.predicates.AssociationRolePredicate;
! import org.tmapiutils.query.tolog.predicates.BaseLocatorPredicate;
! import org.tmapiutils.query.tolog.predicates.DirectInstanceOfPredicate;
! import org.tmapiutils.query.tolog.predicates.InstanceOfPredicate;
! import org.tmapiutils.query.tolog.predicates.OccurrencePredicate;
! import org.tmapiutils.query.tolog.predicates.ReifiesPredicate;
! import org.tmapiutils.query.tolog.predicates.ResourcePredicate;
! import org.tmapiutils.query.tolog.predicates.RolePlayerPredicate;
! import org.tmapiutils.query.tolog.predicates.ScopePredicate;
! import org.tmapiutils.query.tolog.predicates.SourceLocatorsPredicate;
! import org.tmapiutils.query.tolog.predicates.SubjectLocatorPredicate;
! import org.tmapiutils.query.tolog.predicates.SubjectIdentifierPredicate;
! import org.tmapiutils.query.tolog.predicates.TopicMapPredicate;
! import org.tmapiutils.query.tolog.predicates.TopicPredicate;
! import org.tmapiutils.query.tolog.predicates.TopicNamePredicate;
! import org.tmapiutils.query.tolog.predicates.TypePredicate;
! import org.tmapiutils.query.tolog.predicates.ValueLikePredicate;
! import org.tmapiutils.query.tolog.predicates.ValuePredicate;
! import org.tmapiutils.query.tolog.predicates.VariantPredicate;
! import org.tmapi.core.TopicMap;
! 
! import antlr.ANTLRException;
! 
! /**
!  *
!  * @author Kal Ahmed (kal[at]techquila.com)
!  * @author Lars Heuer (heuer[at]semagia.com)
!  */
! public class QueryEvaluatorImpl implements QueryEvaluator {
! 
! 	private TopicMap m_tm;
! 
! 	private Map m_rulesByName = null;
! 	private Map m_rulesByPrefix = null;
! 	private Map m_predicatesByName = null;
! 
! 	public QueryEvaluatorImpl(TopicMap tm) {
! 		m_rulesByName = new HashMap();
! 		m_rulesByPrefix = new HashMap();
! 		m_predicatesByName = new HashMap();
! 		initialisePredicates();
! 		setTopicMap(tm);
! 	}
! 
! 	/**
! 	 * Loads the default built-in predicates
! 	 */
! 	private void initialisePredicates() {
!         registerPredicateClass(AssociationPredicate.PREDICATE_NAME, AssociationPredicate.class);
!         registerPredicateClass(AssociationRolePredicate.PREDICATE_NAME, AssociationRolePredicate.class);
!         registerPredicateClass(BaseLocatorPredicate.PREDICATE_NAME, BaseLocatorPredicate.class);
!         registerPredicateClass(DirectInstanceOfPredicate.PREDICATE_NAME, DirectInstanceOfPredicate.class);
!         registerPredicateClass(InstanceOfPredicate.PREDICATE_NAME, InstanceOfPredicate.class);
!         registerPredicateClass(OccurrencePredicate.PREDICATE_NAME, OccurrencePredicate.class);
!         registerPredicateClass(ReifiesPredicate.PREDICATE_NAME, ReifiesPredicate.class);
!         registerPredicateClass(ResourcePredicate.PREDICATE_NAME, ResourcePredicate.class);
!         registerPredicateClass(RolePlayerPredicate.PREDICATE_NAME, RolePlayerPredicate.class);
!         registerPredicateClass(ScopePredicate.PREDICATE_NAME, ScopePredicate.class);
!         registerPredicateClass(SourceLocatorsPredicate.PREDICATE_NAME, SourceLocatorsPredicate.class);
!         registerPredicateClass(SubjectLocatorPredicate.PREDICATE_NAME, SubjectLocatorPredicate.class);
!         registerPredicateClass(SubjectIdentifierPredicate.PREDICATE_NAME, SubjectIdentifierPredicate.class);
!         registerPredicateClass(TopicMapPredicate.PREDICATE_NAME, TopicMapPredicate.class);
!         registerPredicateClass(TopicPredicate.PREDICATE_NAME, TopicPredicate.class);
!         registerPredicateClass(TopicNamePredicate.PREDICATE_NAME, TopicNamePredicate.class);
!         registerPredicateClass(TypePredicate.PREDICATE_NAME, TypePredicate.class);
!         registerPredicateClass(ValueLikePredicate.PREDICATE_NAME, ValueLikePredicate.class);
!         registerPredicateClass(ValuePredicate.PREDICATE_NAME, ValuePredicate.class);
!         registerPredicateClass(VariantPredicate.PREDICATE_NAME, VariantPredicate.class);
! 	}
! 
! 	public void setTopicMap(TopicMap tm) {
! 		m_tm = tm;
! 	}
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.QueryEvaluator#addRulesModule(java.io.InputStream, java.lang.String)
! 	 */
! 	public void addRulesModule(InputStream src, String prefix)
! 		throws IOException, TologParserException
! 	{
! 		try {
! 			TologParser p = new TologParser(new TologLexer(src));
! 			p.setTopicMap(m_tm);
! 			p.setRules(m_rulesByName);
! 			p.setPredicates(m_predicatesByName);
! 			p.setPrefix(prefix);
! 			p.module();
! 			m_rulesByName.putAll(p.getRules());
! 			if (prefix != null) m_rulesByPrefix.put(prefix, p.getRules());
! 		} catch (ANTLRException ex) {
! 			throw new TologParserException("Parser error reading module.", ex);
! 		}
! 	}
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.QueryEvaluator#addRule(java.lang.String)
! 	 */
! 	public void addRule(String rule) throws TologParserException {
! 		try {
! 			TologParser p = new TologParser(new TologLexer(new StringReader(rule)));
!             p.setTopicMap(m_tm);
!             p.setRules(m_rulesByName);
!             p.setPredicates(m_predicatesByName);
! 			TologRule r = p.rule();
! 			m_rulesByName.put(r.getName(), r);
!             m_predicatesByName.put(r.getName(), TologRule.class);
! 		} catch (ANTLRException ex) {
! 			throw new TologParserException("Parser error in rule string.", ex);
! 		}
! 	}
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.QueryEvaluator#prepareQuery(java.lang.String)
! 	 */
! 	public PreparedQuery prepareQuery(String queryString)
! 		throws TologParserException, TologProcessingException
! 	{
! 		try {
! 			TologParser p = new TologParser(new TologLexer(new StringReader(queryString)));
! 			p.setTopicMap(m_tm);
! 			p.setPredicates(m_predicatesByName);
!             p.setRules(m_rulesByName);
!             p.setPrefixRules(m_rulesByPrefix);
! 			TologQuery q = p.query();
! 			PreparedQuery pq = new PreparedQueryImpl(q);
! 			return pq;
! 		} catch (ANTLRException ex) {
! 			throw new TologParserException("Error parsing query string.", ex);
! 		}
! 	}
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.QueryEvaluator#execute(java.lang.String)
! 	 */
! 	public TologResultsSet execute(String queryString)
! 		throws TologParserException, TologProcessingException
! 	{
! 		PreparedQuery pq = prepareQuery(queryString);
! 		return pq.execute();
! 	}
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#execute(java.lang.String, java.lang.Object[])
!      */
!     public TologResultsSet execute(String queryString, Object[] queryParams) throws TologParserException, TologProcessingException {
!         PreparedQuery pq = prepareQuery(queryString);
!         return pq.execute(queryParams);
!     }
! 
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.QueryEvaluator#registerPredicateClass(java.lang.String, java.lang.Class)
! 	 */
! 	public void registerPredicateClass(
! 		String predicateName,
! 		Class predicateClass)
! 		throws IllegalArgumentException
! 	{
! 		if (!Predicate.class.isAssignableFrom(predicateClass)) {
! 			throw new IllegalArgumentException("Class does not implement the " + Predicate.class.getName() + " interface.");
! 		}
! 
! 		m_predicatesByName.put(predicateName, predicateClass);
! 	}
! 
! 	/* (non-Javadoc)
! 	 * @see org.tmapiutils.query.tolog.QueryEvaluator#getRegisteredPredicates()
! 	 */
! 	public Map getRegisteredPredicates() {
! 		return m_predicatesByName;
! 	}
! 
! }
--- 1,209 ----
! /*
!  * Copyright 2005 TMAPI Utils / Kal Ahmed, Lars Heuer
!  * Copyright (c) 2000-2004 The TM4J Project. All rights reserved.
!  *
!  * Licensed under the Apache License, Version 2.0 (the "License");
!  * you may not use this file except in compliance with the License.
!  * You may obtain a copy of the License at
!  *
!  *      http://www.apache.org/licenses/LICENSE-2.0
!  *
!  * Unless required by applicable law or agreed to in writing, software
!  * distributed under the License is distributed on an "AS IS" BASIS,
!  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
!  * See the License for the specific language governing permissions and
!  * limitations under the License.
!  */
! 
! package org.tmapiutils.query.tolog.memory;
! 
! import java.io.IOException;
! import java.io.InputStream;
! import java.io.StringReader;
! import java.util.HashMap;
! import java.util.Map;
! 
! import org.tmapiutils.query.tolog.TologResultsSet;
! import org.tmapiutils.query.tolog.PreparedQuery;
! import org.tmapiutils.query.tolog.QueryEvaluator;
! import org.tmapiutils.query.tolog.TologParserException;
! import org.tmapiutils.query.tolog.TologProcessingException;
! import org.tmapiutils.query.tolog.parser.Predicate;
! import org.tmapiutils.query.tolog.parser.TologLexer;
! import org.tmapiutils.query.tolog.parser.TologParser;
! import org.tmapiutils.query.tolog.parser.TologQuery;
! import org.tmapiutils.query.tolog.parser.TologRule;
! import org.tmapiutils.query.tolog.predicates.AssociationPredicate;
! import org.tmapiutils.query.tolog.predicates.AssociationRolePredicate;
! import org.tmapiutils.query.tolog.predicates.BaseLocatorPredicate;
! import org.tmapiutils.query.tolog.predicates.DirectInstanceOfPredicate;
! import org.tmapiutils.query.tolog.predicates.InstanceOfPredicate;
! import org.tmapiutils.query.tolog.predicates.OccurrencePredicate;
! import org.tmapiutils.query.tolog.predicates.ReifiesPredicate;
! import org.tmapiutils.query.tolog.predicates.ResourcePredicate;
! import org.tmapiutils.query.tolog.predicates.RolePlayerPredicate;
! import org.tmapiutils.query.tolog.predicates.ScopePredicate;
! import org.tmapiutils.query.tolog.predicates.SourceLocatorsPredicate;
! import org.tmapiutils.query.tolog.predicates.SubjectLocatorPredicate;
! import org.tmapiutils.query.tolog.predicates.SubjectIdentifierPredicate;
! import org.tmapiutils.query.tolog.predicates.TopicMapPredicate;
! import org.tmapiutils.query.tolog.predicates.TopicPredicate;
! import org.tmapiutils.query.tolog.predicates.TopicNamePredicate;
! import org.tmapiutils.query.tolog.predicates.TypePredicate;
! import org.tmapiutils.query.tolog.predicates.ValueLikePredicate;
! import org.tmapiutils.query.tolog.predicates.ValuePredicate;
! import org.tmapiutils.query.tolog.predicates.VariantPredicate;
! import org.tmapi.core.TopicMap;
! 
! import antlr.ANTLRException;
! 
! /**
!  *
!  * @author Kal Ahmed (kal[at]techquila.com)
!  * @author Lars Heuer (heuer[at]semagia.com)
!  */
! public class QueryEvaluatorImpl implements QueryEvaluator {
! 
!     private TopicMap m_tm;
! 
!     private Map m_rulesByName = null;
!     private Map m_rulesByPrefix = null;
!     private Map m_predicatesByName = null;
! 
!     public QueryEvaluatorImpl(TopicMap tm) {
!         m_rulesByName = new HashMap();
!         m_rulesByPrefix = new HashMap();
!         m_predicatesByName = new HashMap();
!         initialisePredicates();
!         setTopicMap(tm);
!     }
! 
!     /**
!      * Loads the default built-in predicates
!      */
!     private void initialisePredicates() {
!         registerPredicateClass(AssociationPredicate.PREDICATE_NAME, AssociationPredicate.class);
!         registerPredicateClass(AssociationRolePredicate.PREDICATE_NAME, AssociationRolePredicate.class);
!         registerPredicateClass(BaseLocatorPredicate.PREDICATE_NAME, BaseLocatorPredicate.class);
!         registerPredicateClass(DirectInstanceOfPredicate.PREDICATE_NAME, DirectInstanceOfPredicate.class);
!         registerPredicateClass(InstanceOfPredicate.PREDICATE_NAME, InstanceOfPredicate.class);
!         registerPredicateClass(OccurrencePredicate.PREDICATE_NAME, OccurrencePredicate.class);
!         registerPredicateClass(ReifiesPredicate.PREDICATE_NAME, ReifiesPredicate.class);
!         registerPredicateClass(ResourcePredicate.PREDICATE_NAME, ResourcePredicate.class);
!         registerPredicateClass(RolePlayerPredicate.PREDICATE_NAME, RolePlayerPredicate.class);
!         registerPredicateClass(ScopePredicate.PREDICATE_NAME, ScopePredicate.class);
!         registerPredicateClass(SourceLocatorsPredicate.PREDICATE_NAME, SourceLocatorsPredicate.class);
!         registerPredicateClass(SubjectLocatorPredicate.PREDICATE_NAME, SubjectLocatorPredicate.class);
!         registerPredicateClass(SubjectIdentifierPredicate.PREDICATE_NAME, SubjectIdentifierPredicate.class);
!         registerPredicateClass(TopicMapPredicate.PREDICATE_NAME, TopicMapPredicate.class);
!         registerPredicateClass(TopicPredicate.PREDICATE_NAME, TopicPredicate.class);
!         registerPredicateClass(TopicNamePredicate.PREDICATE_NAME, TopicNamePredicate.class);
!         registerPredicateClass(TypePredicate.PREDICATE_NAME, TypePredicate.class);
!         registerPredicateClass(ValueLikePredicate.PREDICATE_NAME, ValueLikePredicate.class);
!         registerPredicateClass(ValuePredicate.PREDICATE_NAME, ValuePredicate.class);
!         registerPredicateClass(VariantPredicate.PREDICATE_NAME, VariantPredicate.class);
!     }
! 
!     public void setTopicMap(TopicMap tm) {
!         m_tm = tm;
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#addRulesModule(java.io.InputStream, java.lang.String)
!      */
!     public void addRulesModule(InputStream src, String prefix)
!         throws IOException, TologParserException
!     {
!         try {
!             TologParser p = new TologParser(new TologLexer(src));
!             p.setTopicMap(m_tm);
!             p.setRules(m_rulesByName);
!             p.setPredicates(m_predicatesByName);
!             p.setPrefix(prefix);
!             p.module();
!             m_rulesByName.putAll(p.getRules());
!             if (prefix != null) m_rulesByPrefix.put(prefix, p.getRules());
!         } catch (ANTLRException ex) {
!             throw new TologParserException("Parser error reading module.", ex);
!         }
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#addRule(java.lang.String)
!      */
!     public void addRule(String rule) throws TologParserException {
!         try {
!             TologParser p = new TologParser(new TologLexer(new StringReader(rule)));
!             p.setTopicMap(m_tm);
!             p.setRules(m_rulesByName);
!             p.setPredicates(m_predicatesByName);
!             TologRule r = p.rule();
!             m_rulesByName.put(r.getName(), r);
!             m_predicatesByName.put(r.getName(), TologRule.class);
!         } catch (ANTLRException ex) {
!             throw new TologParserException("Parser error in rule string.", ex);
!         }
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#prepareQuery(java.lang.String)
!      */
!     public PreparedQuery prepareQuery(String queryString)
!         throws TologParserException, TologProcessingException
!     {
!         try {
!             TologParser p = new TologParser(new TologLexer(new StringReader(queryString)));
!             p.setTopicMap(m_tm);
!             p.setPredicates(m_predicatesByName);
!             p.setRules(m_rulesByName);
!             p.setPrefixRules(m_rulesByPrefix);
!             TologQuery q = p.query();
!             PreparedQuery pq = new PreparedQueryImpl(q);
!             return pq;
!         } catch (ANTLRException ex) {
!             throw new TologParserException("Error parsing query string.", ex);
!         }
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#execute(java.lang.String)
!      */
!     public TologResultsSet execute(String queryString)
!         throws TologParserException, TologProcessingException
!     {
!         PreparedQuery pq = prepareQuery(queryString);
!         return pq.execute();
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#execute(java.lang.String, java.lang.Object[])
!      */
!     public TologResultsSet execute(String queryString, Object[] queryParams) throws TologParserException, TologProcessingException {
!         PreparedQuery pq = prepareQuery(queryString);
!         return pq.execute(queryParams);
!     }
! 
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#registerPredicateClass(java.lang.String, java.lang.Class)
!      */
!     public void registerPredicateClass(
!         String predicateName,
!         Class predicateClass)
!         throws IllegalArgumentException
!     {
!         if (!Predicate.class.isAssignableFrom(predicateClass)) {
!             throw new IllegalArgumentException("Class does not implement the " + Predicate.class.getName() + " interface.");
!         }
! 
!         m_predicatesByName.put(predicateName, predicateClass);
!     }
! 
!     /* (non-Javadoc)
!      * @see org.tmapiutils.query.tolog.QueryEvaluator#getRegisteredPredicates()
!      */
!     public Map getRegisteredPredicates() {
!         return m_predicatesByName;
!     }
! 
! }