org.equanda.persistence
Class ObjectSelector

java.lang.Object
  org.equanda.persistence.ObjectSelector

public final class ObjectSelector
extends Object

Support methods for DMObjectSelector classes

Author:

NetRom team

Field Summary

static String

FILTER_PARAMETER_PREFIX

Method Summary

static String	addFilter(String orgQuery, String fromPart, String wherePart)
static String	addTypeFilter(String query, ObjectType type)
static javax.persistence.Query	getEquandaQuery(javax.persistence.EntityManager em, EquandaQuery equandaQuery)
static javax.persistence.Query	getEquandaQuery(javax.persistence.EntityManager em, EquandaQuery equandaQuery, String queryString)
static javax.persistence.Query	getEquandaQuery(javax.persistence.EntityManager em, EquandaQuery equandaQuery, String queryString, boolean setLimits)
static String	getQueryObject(String query) Get the name of the selected object from the query
static String	getRunCountQueryString(EquandaQuery equandaQuery) Get query string for the count query
static long	runUpdateQuery(javax.persistence.EntityManager em, EquandaQuery equandaQuery) Run an update query (which could amongst others be used for bulk delete).
static String	setFilter(EquandaQuery equandaQuery, String queryStr, String name, String fromPart, String wherePart) Adds one extra filter to the query
static String	setOrderBy(String queryStr, String fieldName) Replaces/set the order by clause in a query with a new one Used for the configured selectors sorting

Methods inherited from class java.lang.Object

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

Field Detail

FILTER_PARAMETER_PREFIX

public static final String FILTER_PARAMETER_PREFIX

See Also:

Constant Field Values

Method Detail

getEquandaQuery

public static javax.persistence.Query getEquandaQuery(javax.persistence.EntityManager em,
                                                      EquandaQuery equandaQuery)

getEquandaQuery

public static javax.persistence.Query getEquandaQuery(javax.persistence.EntityManager em,
                                                      EquandaQuery equandaQuery,
                                                      String queryString)

getEquandaQuery

public static javax.persistence.Query getEquandaQuery(javax.persistence.EntityManager em,
                                                      EquandaQuery equandaQuery,
                                                      String queryString,
                                                      boolean setLimits)

getQueryObject

public static String getQueryObject(String query)

Get the name of the selected object from the query

Parameters:

query - String representation of query

Returns:

object name

addFilter

public static String addFilter(String orgQuery,
                               String fromPart,
                               String wherePart)

addTypeFilter

public static String addTypeFilter(String query,
                                   ObjectType type)

getRunCountQueryString

public static String getRunCountQueryString(EquandaQuery equandaQuery)

Get query string for the count query

Parameters:

equandaQuery - base query

Returns:

count query string

runUpdateQuery

public static long runUpdateQuery(javax.persistence.EntityManager em,
                                  EquandaQuery equandaQuery)

Run an update query (which could amongst others be used for bulk delete).

Parameters:

em - entity manager

equandaQuery - query

Returns:

number of affected records

setOrderBy

public static String setOrderBy(String queryStr,
                                String fieldName)

Replaces/set the order by clause in a query with a new one Used for the configured selectors sorting

Parameters:

queryStr - old query

fieldName - new field for use with ORDER BY

Returns:

the new calculated query

setFilter

public static String setFilter(EquandaQuery equandaQuery,
                               String queryStr,
                               String name,
                               String fromPart,
                               String wherePart)

Adds one extra filter to the query

Parameters:

equandaQuery - original query, filter parameters are added in this

queryStr - old query

name - name of the filter

fromPart - stuff which needs to be inserted in the "from" part of the query

wherePart - stuff which needs to be inserted in the "where" part of the query

Returns:

the new calculated query