org.opensubsystems.patterns.listdata.persist.db
Class PostgreSQLListDatabaseUtils

java.lang.Object
  org.opensubsystems.patterns.listdata.persist.db.ListDatabaseUtils
      org.opensubsystems.patterns.listdata.persist.db.PostgreSQLListDatabaseUtils

public class PostgreSQLListDatabaseUtils
extends ListDatabaseUtils

This class is used for common list retrieval and manipulation routines specific for PostgreSQL.

Version:

$Id: PostgreSQLListDatabaseUtils.java,v 1.15 2007/01/07 06:14:23 bastafidli Exp $

Author:

Julo Legeny

Code reviewer:

Miro Halas

Code reviewed:

1.12 2006/03/14 23:56:56 jlegeny

Field Summary

Fields inherited from class org.opensubsystems.patterns.listdata.persist.db.ListDatabaseUtils

LIST_INDEX_PREFIX

Constructor Summary

PostgreSQLListDatabaseUtils()
Constructor

Method Summary

java.util.List	getObjectList(ListOptions options, java.lang.String query, ListDatabaseFactory factory, ListDatabaseSchema schema) Get list of data objects for specified parameters
protected java.lang.String	preprocessSelectQuery(java.lang.String inputQuery, ListOptions options, ListDatabaseSchema schema) Method that preprocess query (by adding specific SQL clauses for example LIMIT, ...) to improve performance of selecting items from the list at specific position.

Methods inherited from class org.opensubsystems.patterns.listdata.persist.db.ListDatabaseUtils

allocateObjectList, convertValueToSQL, getConstructListIndexName, getInstance, getObjectListKeepSelected, getSelectCount, getSelectList, getSQLOperation, getSQLValue, getTotalRecords, getWhereClause, getWhereClause, parseCondition, preprocessSelectQueryForCreationDate, setOptionPositioning

Methods inherited from class java.lang.Object

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

Constructor Detail

PostgreSQLListDatabaseUtils

public PostgreSQLListDatabaseUtils()

Constructor

Method Detail

getObjectList

public java.util.List getObjectList(ListOptions options,
                                    java.lang.String query,
                                    ListDatabaseFactory factory,
                                    ListDatabaseSchema schema)
                             throws org.opensubsystems.core.error.OSSException

Get list of data objects for specified parameters

Overrides:

getObjectList in class ListDatabaseUtils

Parameters:

options - - list option describing the list to retrieve

query - - select SQL query

factory - - list factory for specific data object

schema - - list database schema

Returns:

List - list of data objects

Throws:

org.opensubsystems.core.error.OSSException - - an error getting object list

preprocessSelectQuery

protected java.lang.String preprocessSelectQuery(java.lang.String inputQuery,
                                                 ListOptions options,
                                                 ListDatabaseSchema schema)
                                          throws org.opensubsystems.core.error.OSSException

Method that preprocess query (by adding specific SQL clauses for example LIMIT, ...) to improve performance of selecting items from the list at specific position. This method can be overwritten by DB specific method.

Overrides:

preprocessSelectQuery in class ListDatabaseUtils

Parameters:

inputQuery - - query that will be preprocessed

options - - initialized list options that will be used for retrieving begin position, page size, ...

schema - - list database schema

Returns:

String - preprocessed query

Throws:

org.opensubsystems.core.error.OSSException - - error during preprocessing select query