Package net.ontopia.topicmaps.query.impl.basic

Class QueryProcessor

java.lang.Object

net.ontopia.topicmaps.query.impl.basic.AbstractQueryProcessor

net.ontopia.topicmaps.query.impl.basic.QueryProcessor

All Implemented Interfaces:

IndexIF, QueryProcessorIF

public class QueryProcessor
extends AbstractQueryProcessor
implements QueryProcessorIF, IndexIF

INTERNAL: This query processor implementation can be used to query any topic map implementation; it makes no assumptions about the stored form of the topic map.

Field Summary

Fields

Modifier and Type	Field	Description
protected Collator	collator
protected TologOptions	options
protected TologParser	parser
protected TopicMapIF	topicmap

Constructor Summary

Constructors

Constructor	Description
QueryProcessor(TopicMapIF topicmap)
QueryProcessor(TopicMapIF topicmap, LocatorIF base)

Method Summary

Modifier and Type	Method	Description
QueryMatches	count(TologQuery query, QueryMatches matches)	INTERNAL: Replaces count($A) variables by their relevant counts.
QueryMatches	createInitialMatches(TologQuery query, Collection items, Map arguments)
QueryMatches	createInitialMatches(TologQuery query, Map arguments)
QueryResultIF	execute(String query)	PUBLIC: Parses and executes the query, returning the results.
QueryResultIF	execute(String query, Map arguments)	PUBLIC: Parses and executes the query binding the parameters in the query to the values given in the 'arguments' map, returning the results.
QueryResultIF	execute(String query, Map arguments, DeclarationContextIF context)	PUBLIC: Parses and executes the query in the given context binding the parameters in the query to the values given in the 'arguments' map, returning the results.
QueryResultIF	execute(String query, DeclarationContextIF context)	PUBLIC: Parses and executes the query in the given context, returning the results.
QueryResultIF	execute(TologQuery query)
QueryResultIF	execute(TologQuery query, Map arguments)
TologOptions	getOptions()
void	load(Reader ruleset)	DEPRECATED: Loads a set of rules into the query processor from a reader object.
void	load(String ruleset)	DEPRECATED: Loads a set of rules into the query processor from a string.
ParsedQueryIF	parse(String query)	PUBLIC: Parses the query, returning an object representing the result.
ParsedQueryIF	parse(String query, DeclarationContextIF context)	PUBLIC: Parses the query in the given context, returning an object representing the result.
protected TologQuery	parseQuery(String query, DeclarationContextIF context)
ParsedModificationStatementIF	parseUpdate(String statement)	PUBLIC: Parses the update statement, returning an object representing the result.
ParsedModificationStatementIF	parseUpdate(String statement, DeclarationContextIF context)	PUBLIC: Parses the update statement in the given context, returning an object representing the result.
protected ModificationStatement	parseUpdateStatement(String statement, DeclarationContextIF ctx)
QueryMatches	reduce(TologQuery query, QueryMatches matches)	INTERNAL: Projects the query results onto the set of variables specified in the 'select' clause.
protected int	runUpdate(ModificationStatement statement, Map<String,?> params)
void	sort(TologQuery query, QueryMatches matches)	INTERNAL: Sorts the query result as requested.
int	update(String query)	PUBLIC: Runs the update statement, returning the number of modified objects.
int	update(String query, Map<String,?> params)	PUBLIC: Runs the update statement with the given parameters, returning the number of modified objects.
int	update(String query, Map<String,?> params, DeclarationContextIF context)	PUBLIC: Runs the update statement in the given declaration context with the given parameters, returning the number of modified objects.
int	update(String query, DeclarationContextIF context)	PUBLIC: Runs the update statement in the given declaration context, returning the number of modified objects.

Methods inherited from class net.ontopia.topicmaps.query.impl.basic.AbstractQueryProcessor

findClauseItems, findClauseVariables, satisfy

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

topicmap

protected TopicMapIF topicmap

collator

protected Collator collator

options

protected TologOptions options

parser

protected TologParser parser

Constructor Details

QueryProcessor

public QueryProcessor(TopicMapIF topicmap)

QueryProcessor

public QueryProcessor(TopicMapIF topicmap,
 LocatorIF base)

Method Details

getOptions

public TologOptions getOptions()

execute

public QueryResultIF execute(String query)
                      throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses and executes the query, returning the results.

Specified by:

execute in interface QueryProcessorIF

Throws:

InvalidQueryException

execute

public QueryResultIF execute(String query,
 DeclarationContextIF context)
                      throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses and executes the query in the given context, returning the results.

Specified by:

execute in interface QueryProcessorIF

Throws:

InvalidQueryException

execute

public QueryResultIF execute(String query,
 Map arguments)
                      throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses and executes the query binding the parameters in the query to the values given in the 'arguments' map, returning the results.

Specified by:

execute in interface QueryProcessorIF

Throws:

InvalidQueryException

execute

public QueryResultIF execute(String query,
 Map arguments,
 DeclarationContextIF context)
                      throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses and executes the query in the given context binding the parameters in the query to the values given in the 'arguments' map, returning the results.

Specified by:

execute in interface QueryProcessorIF

Throws:

InvalidQueryException

parse

public ParsedQueryIF parse(String query)
                    throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses the query, returning an object representing the result.

Specified by:

parse in interface QueryProcessorIF

Throws:

InvalidQueryException

parse

public ParsedQueryIF parse(String query,
 DeclarationContextIF context)
                    throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses the query in the given context, returning an object representing the result.

Specified by:

parse in interface QueryProcessorIF

Throws:

InvalidQueryException

parseQuery

protected TologQuery parseQuery(String query,
 DeclarationContextIF context)
                         throws InvalidQueryException

Throws:

InvalidQueryException

load

public void load(String ruleset)
          throws InvalidQueryException

Description copied from interface: QueryProcessorIF

DEPRECATED: Loads a set of rules into the query processor from a string. The rules will then be available for use in queries throughout the lifetime of the current scope.

Specified by:

load in interface QueryProcessorIF

Throws:

InvalidQueryException

load

public void load(Reader ruleset)
          throws InvalidQueryException,
IOException

Description copied from interface: QueryProcessorIF

DEPRECATED: Loads a set of rules into the query processor from a reader object. The rules will then be available for use in queries throughout the lifetime of the current scope.

Specified by:

load in interface QueryProcessorIF

Throws:

InvalidQueryException

IOException

execute

public QueryResultIF execute(TologQuery query)
                      throws InvalidQueryException

Throws:

InvalidQueryException

execute

public QueryResultIF execute(TologQuery query,
 Map arguments)
                      throws InvalidQueryException

Throws:

InvalidQueryException

update

public int update(String query)
           throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Runs the update statement, returning the number of modified objects.

Specified by:

update in interface QueryProcessorIF

Throws:

InvalidQueryException

update

public int update(String query,
 DeclarationContextIF context)
           throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Runs the update statement in the given declaration context, returning the number of modified objects.

Specified by:

update in interface QueryProcessorIF

Throws:

InvalidQueryException

update

public int update(String query,
 Map<String,?> params)
           throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Runs the update statement with the given parameters, returning the number of modified objects.

Specified by:

update in interface QueryProcessorIF

Throws:

InvalidQueryException

update

public int update(String query,
 Map<String,?> params,
 DeclarationContextIF context)
           throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Runs the update statement in the given declaration context with the given parameters, returning the number of modified objects.

Specified by:

update in interface QueryProcessorIF

Throws:

InvalidQueryException

parseUpdate

public ParsedModificationStatementIF parseUpdate(String statement)
                                          throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses the update statement, returning an object representing the result.

Specified by:

parseUpdate in interface QueryProcessorIF

Throws:

InvalidQueryException

parseUpdate

public ParsedModificationStatementIF parseUpdate(String statement,
 DeclarationContextIF context)
                                          throws InvalidQueryException

Description copied from interface: QueryProcessorIF

PUBLIC: Parses the update statement in the given context, returning an object representing the result.

Specified by:

parseUpdate in interface QueryProcessorIF

Throws:

InvalidQueryException

parseUpdateStatement

protected ModificationStatement parseUpdateStatement(String statement,
 DeclarationContextIF ctx)
                                              throws InvalidQueryException

Throws:

InvalidQueryException

runUpdate

protected int runUpdate(ModificationStatement statement,
 Map<String,?> params)
                 throws InvalidQueryException

Throws:

InvalidQueryException

createInitialMatches

public QueryMatches createInitialMatches(TologQuery query,
 Map arguments)

createInitialMatches

public QueryMatches createInitialMatches(TologQuery query,
 Collection items,
 Map arguments)

reduce

public QueryMatches reduce(TologQuery query,
 QueryMatches matches)

INTERNAL: Projects the query results onto the set of variables specified in the 'select' clause. If there is no 'select' clause nothing is done.

Parameters:

query - The parsed query.

matches - The query result.

count

public QueryMatches count(TologQuery query,
 QueryMatches matches)

INTERNAL: Replaces count($A) variables by their relevant counts.

Parameters:

query - The parsed query.

matches - The query result.

sort

public void sort(TologQuery query,
 QueryMatches matches)

INTERNAL: Sorts the query result as requested.

Parameters:

query - The parsed query.

matches - The query result.