org.tm4j.tolog .QueryEvaluator

java.lang.Object

QueryEvaluator

Method Summary
void	addRule(java.lang.String ruleString)
void	addRules(org.tm4j.tolog.parser.ASTScript script)
void	dumpMatches(java.util.List matches)
void	dumpVars(java.util.Hashtable vars,java.lang.String prefix)
TologResultsSet	evaluate(java.lang.String queryString) Performs the evaluation of the query `queryString`.
QueryEvaluator.ExpansionInfo	expand(org.tm4j.tolog.parser.ASTClause clause)
org.tm4j.tolog.parser.ASTClauseList	expand(org.tm4j.tolog.parser.ASTClauseList clauseList)
java.lang.String	getExpandPrefix()
void	getMatches(java.util.List clauses,int clauseIx,java.util.Hashtable vars,java.util.List matches)
void	getMatches(java.util.List params,int paramIx,java.util.List prPairs,java.util.Hashtable vars,java.util.List matches)
void	getMatches(org.tm4j.tolog.parser.ASTAlternates alternates,java.util.Hashtable vars,java.util.List matches) Processes the alternatives construct represented by `alt` using the variable binding specified by `vars`.
void	getMatches(org.tm4j.tolog.parser.ASTClauseList clauseList,java.util.List matches)
void	getMatches(org.tm4j.tolog.parser.ASTParameterList params,java.util.List prPairs,java.util.Hashtable vars,java.util.List matches)
java.util.List	getPlayerRolePairs(org.tm4j.topicmap.Association a)
void	invokeExtension(java.lang.Class extCls,org.tm4j.tolog.parser.ASTParameterList params,java.util.Hashtable vars,java.util.List matches)
void	invokeExtensionTest(java.lang.Class extCls,org.tm4j.tolog.parser.ASTParameterList params,java.util.Hashtable vars) Invokes the extension class `extCls` to test the extension predicate under the set of bound variables specified in `vars`
void	loadRules(java.lang.String fileName)
java.util.List	optimiseClauseList(org.tm4j.tolog.parser.ASTClauseList clauseList) Optimises the contents of the clause list.
java.util.List	optimiseParams(org.tm4j.tolog.parser.ASTParameterList params,java.util.Hashtable vars) Alters the ordering of `params` so that all facts (parameters with no variables) occur at the start of the list.
void	populateReplacementVariablesFromExpandedClause(org.tm4j.tolog.parser.ASTParameterList params,org.tm4j.tolog.parser.ASTClause repHead,java.lang.String repPrefix,java.util.Map replacementVars) Processes the specified clause to map any bound variables in the clause to the new replacement variable name.
TologResultsSetImpl	projectAllResults(java.util.List results) Creates a results set in which all variables in the original query are mapped to columns in the results set.
TologResultsSetImpl	projectResults(java.util.List results,org.tm4j.tolog.parser.ASTProjection projection)
void	pruneInternal(java.util.List matches)
void	registerExtension(java.lang.String predicate,java.lang.Class implCls) Registers a new extension predicate with the query engine.
void	setSortComparator(java.util.Comparator comp) Registers a sort order comparator with the query engine.
java.lang.String	shortAddress(org.tm4j.topicmap.Topic t)
void	sortResults(org.tm4j.tolog.TologResultsSetImpl results,org.tm4j.tolog.parser.ASTSort sort)
void	test(org.tm4j.tolog.parser.ASTClause clause,java.util.Hashtable vars)
void	testMatches(java.util.List clauses,int clauseIx,java.util.Hashtable vars,java.util.List matches) Implementation of not() processing.
void	testMatches(org.tm4j.tolog.parser.ASTParameterList params,java.util.List prPairs,java.util.Hashtable vars) Tests the parameters in params against the bound variables in vars.