com.highqsoft.querytree

Class Query

java.lang.Object

com.highqsoft.querytree.Query

All Implemented Interfaces:

QueryIF

public class Query
extends java.lang.Object
implements QueryIF

This is the query interface implementations for the querystructureext xml tag.

Since:

$Date: 2017/04/06 13:30:28 $

Version:

$Revision: 1.8 $

Author:

Andreas Hofmann

See Also:

ImplementationIF

Constructor Summary

Constructors

Constructor and Description
Query(XSDContextIF ctx, Querystructureext qseXSD) Create the object.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Close the query.
protected ResultIF	distinct(ResultIF result) Get a distinct result based on the given result set.
ResultIF	query(XSDContextIF context) Get the result set from query.
protected ResultIF	reorganize(OdsCacheIF cache, QueryStructureExt qse, ResultSetExt res) The query result is ordered by the elements.
void	setDisinct(boolean flag) Request a disinct result set.
void	setMaxRows(int maxRows) Set the maximum number of row to be selected.

Methods inherited from class java.lang.Object

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

Constructor Detail

Query

public Query(XSDContextIF ctx,
     Querystructureext qseXSD)

Create the object.

Parameters:

ctx - the context.

qseXSD - the query structure xml descriptor.

Method Detail

setMaxRows

public void setMaxRows(int maxRows)

Set the maximum number of row to be selected.

Specified by:

setMaxRows in interface QueryIF

Parameters:

maxRows - the maximum number.

setDisinct

public void setDisinct(boolean flag)

Request a disinct result set.

Specified by:

setDisinct in interface QueryIF

Parameters:

flag - if true the result set is disinct.

query

public ResultIF query(XSDContextIF context)
               throws AoException,
                      java.text.ParseException

Get the result set from query.

Specified by:

query in interface QueryIF

Parameters:

context - the context.

Returns:

the query reset set.

Throws:

AoException - if ASAM ODS fails.

java.text.ParseException - if unable to parse the XML structure.

close

public void close()

Close the query.

Specified by:

close in interface QueryIF

reorganize

protected ResultIF reorganize(OdsCacheIF cache,
                  QueryStructureExt qse,
                  ResultSetExt res)

The query result is ordered by the elements. The request is ordered by the attributes. This method returns a array of integers that can be used to get the same order of result as requested.

Parameters:

qse - The request.

res - the result.

Returns:

the integer array. First index is the requested element index. The first element of the second is the index of element and the second the index of attribute in result.

distinct

protected ResultIF distinct(ResultIF result)

Get a distinct result based on the given result set.

Parameters:

res - the source result set.

Returns:

a distinct result set.