Package net.ontopia.topicmaps.query.impl.rdbms

Class ParsedQuery

java.lang.Object

net.ontopia.topicmaps.query.impl.rdbms.ParsedQuery

All Implemented Interfaces:

ParsedQueryIF, ParsedStatementIF

public final class ParsedQuery
extends Object
implements ParsedQueryIF

INTERNAL: Class used to represent parsed queries. The class wraps a query executer and a tolog query intance (as generated by the parser). The actual query execution is delegated to the query executer.

Field Summary

Fields

Modifier and Type	Field	Description
protected QueryProcessor	bprocessor
protected QueryComponentIF[]	components
protected boolean	has_bclauses
protected int	qresult
protected TologQuery	query
protected QueryProcessor	rprocessor
protected SQLGeneratorIF	sqlgen
protected QueryIF	sqlquery

Constructor Summary

Constructors

Constructor	Description
ParsedQuery(QueryProcessor rprocessor, QueryProcessor bprocessor, TologQuery query)

Method Summary

Modifier and Type	Method	Description
protected net.ontopia.topicmaps.query.impl.rdbms.ParsedQuery.QueryContext	compile(QueryBuilder builder, List clauses)
protected void	compileQuery(QueryBuilder builder, TologQuery query)
QueryResultIF	execute()	PUBLIC: Executes the query, returning the query result.
QueryResultIF	execute(Map arguments)	PUBLIC: Executes the query binding the parameters in the query to the values given in the 'arguments' map, returning the query result.
Collection	getAllVariables()	PUBLIC: Returns all the variables used in the query, in no particular order.
List	getClauses()
Collection	getCountedVariables()	PUBLIC: Returns the variables that are counted in the select clause of the query.
List	getOrderBy()	PUBLIC: Returns the variables listed in the order by clause in the order they are given there.
List	getSelectedVariables()	PUBLIC: Returns the variables in the select clause of the query, in the order given there.
protected List	getVariables(Collection varnames)
protected boolean	isIndependent(JDOExpressionIF expr)
protected boolean	isOrderableTypes(TologQuery query)
boolean	isOrderedAscending(String name)	PUBLIC: Returns true if the named variable is to be sorted in ascending order.
protected boolean	isSupportedArguments(QueryBuilder builder, List arguments)
protected JDOQuery	makeJDOQuery(QueryBuilder builder, net.ontopia.topicmaps.query.impl.rdbms.ParsedQuery.QueryContext qcontext, boolean aggfunc, boolean orderby)
protected QueryMatches	prepareQueryMatches(Map arguments)
protected void	prescan(QueryBuilder builder, List clauses)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

query

protected TologQuery query

rprocessor

protected QueryProcessor rprocessor

bprocessor

protected QueryProcessor bprocessor

components

protected QueryComponentIF[] components

sqlquery

protected QueryIF sqlquery

qresult

protected int qresult

has_bclauses

protected boolean has_bclauses

sqlgen

protected SQLGeneratorIF sqlgen

Constructor Detail

ParsedQuery

public ParsedQuery(QueryProcessor rprocessor,
                   QueryProcessor bprocessor,
                   TologQuery query)
            throws InvalidQueryException

Throws:

InvalidQueryException

Method Detail

compileQuery

protected void compileQuery(QueryBuilder builder,
                            TologQuery query)
                     throws InvalidQueryException

Throws:

InvalidQueryException

makeJDOQuery

protected JDOQuery makeJDOQuery(QueryBuilder builder,
                                net.ontopia.topicmaps.query.impl.rdbms.ParsedQuery.QueryContext qcontext,
                                boolean aggfunc,
                                boolean orderby)
                         throws InvalidQueryException

Throws:

InvalidQueryException

getClauses

public List getClauses()

getSelectedVariables

public List getSelectedVariables()

Description copied from interface: ParsedQueryIF

PUBLIC: Returns the variables in the select clause of the query, in the order given there. If there is no select clause all the variables used in the query are returned, in no particular order.

Specified by:

getSelectedVariables in interface ParsedQueryIF

Returns:

An immutable List of String objects.

getAllVariables

public Collection getAllVariables()

Description copied from interface: ParsedQueryIF

PUBLIC: Returns all the variables used in the query, in no particular order.

Specified by:

getAllVariables in interface ParsedQueryIF

Returns:

An immutable Collection of String objects.

getCountedVariables

public Collection getCountedVariables()

Description copied from interface: ParsedQueryIF

PUBLIC: Returns the variables that are counted in the select clause of the query. They are returned in no particular order. If there are no counted variables, or if there is no select clause an empty collection is returned.

Specified by:

getCountedVariables in interface ParsedQueryIF

Returns:

An immutable Collection of String objects.

getOrderBy

public List getOrderBy()

Description copied from interface: ParsedQueryIF

PUBLIC: Returns the variables listed in the order by clause in the order they are given there. In order to see which ones are ascending and which descending, use the isOrderedAscending method.

Specified by:

getOrderBy in interface ParsedQueryIF

Returns:

An immutable List of String objects.

isOrderedAscending

public boolean isOrderedAscending(String name)

Description copied from interface: ParsedQueryIF

PUBLIC: Returns true if the named variable is to be sorted in ascending order.

Specified by:

isOrderedAscending in interface ParsedQueryIF

getVariables

protected List getVariables(Collection varnames)

execute

public QueryResultIF execute()
                      throws InvalidQueryException

Description copied from interface: ParsedQueryIF

PUBLIC: Executes the query, returning the query result. Query results are not cached, so results are up to date.

Specified by:

execute in interface ParsedQueryIF

Throws:

InvalidQueryException

execute

public QueryResultIF execute(Map arguments)
                      throws InvalidQueryException

Description copied from interface: ParsedQueryIF

PUBLIC: Executes the query binding the parameters in the query to the values given in the 'arguments' map, returning the query result. Query results are not cached, so results are up to date.

Specified by:

execute in interface ParsedQueryIF

Throws:

InvalidQueryException

prepareQueryMatches

protected QueryMatches prepareQueryMatches(Map arguments)

prescan

protected void prescan(QueryBuilder builder,
                       List clauses)

isSupportedArguments

protected boolean isSupportedArguments(QueryBuilder builder,
                                       List arguments)

compile

protected net.ontopia.topicmaps.query.impl.rdbms.ParsedQuery.QueryContext compile(QueryBuilder builder,
                                                                                  List clauses)
                                                                           throws InvalidQueryException

Throws:

InvalidQueryException

isIndependent

protected boolean isIndependent(JDOExpressionIF expr)

isOrderableTypes

protected boolean isOrderableTypes(TologQuery query)

toString

public String toString()

Overrides:

toString in class Object