org.rhq.enterprise.server.util

Class CriteriaQueryGenerator

java.lang.Object

org.rhq.enterprise.server.util.CriteriaQueryGenerator

public final class CriteriaQueryGenerator
extends Object

A query generator used to generate queries with specific filtering, prefetching, or sorting requirements.

Author:

Joseph Marques

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CriteriaQueryGenerator.AuthorizationTokenType

Constructor Summary

Constructors

Constructor and Description
CriteriaQueryGenerator(org.rhq.core.domain.criteria.Criteria criteria)
CriteriaQueryGenerator(org.rhq.core.domain.auth.Subject subject, org.rhq.core.domain.criteria.Criteria criteria)

Method Summary

Methods

Modifier and Type	Method and Description
void	alterProjection(String projection) If you want to return something other than the list of entities represented by the passed Criteria object, you can alter the projection here to return a customized subset or superset of data.
static String	getCleansedFieldName(Field field, int leadingCharsToStrip)
javax.persistence.Query	getCountQuery(javax.persistence.EntityManager em)
List<String>	getFetchFields(org.rhq.core.domain.criteria.Criteria criteria)
Map<String,Object>	getFilterFields(org.rhq.core.domain.criteria.Criteria criteria)
List<Field>	getJoinFetchFields()
static org.rhq.core.domain.util.PageControl	getPageControl(org.rhq.core.domain.criteria.Criteria criteria)
String	getParameterReplacedQuery(boolean countQuery)
List<Field>	getPersistentBagFields() Note: This method should only be called after getQueryString(boolean)} because it is that method where the persistentBagFields property is initialized.
javax.persistence.Query	getQuery(javax.persistence.EntityManager em)
String	getQueryString(boolean countQuery)
boolean	isProjectionAltered()
static void	main(String[] args)
void	setAuthorizationCustomConditionFragment(String fragment)
void	setAuthorizationResourceFragment(CriteriaQueryGenerator.AuthorizationTokenType type, int subjectId)
void	setAuthorizationResourceFragment(CriteriaQueryGenerator.AuthorizationTokenType type, String fragment, int subjectId)
void	setGroupByClause(String groupByClause) The groupBy clause can be set if and only if the projection is altered.
void	setHavingClause(String havingClause) The having clause can be set if and only if the groupBy clause is set.
static void	testAlertCriteria()
static void	testInheritanceCriteria()
static void	testResourceCriteria()
static void	testResourceGroupCriteria()
static void	testSubjectCriteria()

Methods inherited from class java.lang.Object

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

Constructor Detail

CriteriaQueryGenerator

public CriteriaQueryGenerator(org.rhq.core.domain.criteria.Criteria criteria)

CriteriaQueryGenerator

public CriteriaQueryGenerator(org.rhq.core.domain.auth.Subject subject,
                      org.rhq.core.domain.criteria.Criteria criteria)

Method Detail

setAuthorizationCustomConditionFragment

public void setAuthorizationCustomConditionFragment(String fragment)

setAuthorizationResourceFragment

public void setAuthorizationResourceFragment(CriteriaQueryGenerator.AuthorizationTokenType type,
                                    int subjectId)

setAuthorizationResourceFragment

public void setAuthorizationResourceFragment(CriteriaQueryGenerator.AuthorizationTokenType type,
                                    String fragment,
                                    int subjectId)

getParameterReplacedQuery

public String getParameterReplacedQuery(boolean countQuery)

getQueryString

public String getQueryString(boolean countQuery)

getFetchFields

public List<String> getFetchFields(org.rhq.core.domain.criteria.Criteria criteria)

getCleansedFieldName

public static String getCleansedFieldName(Field field,
                          int leadingCharsToStrip)

getFilterFields

public Map<String,Object> getFilterFields(org.rhq.core.domain.criteria.Criteria criteria)

getPersistentBagFields

public List<Field> getPersistentBagFields()

Note: This method should only be called after getQueryString(boolean)} because it is that method where the persistentBagFields property is initialized.

Returns:

Returns a list of fields from the persistent class to which the criteria class corresponds. The fields in the list are themselves instances of List and have "bag" semantics.

getJoinFetchFields

public List<Field> getJoinFetchFields()

alterProjection

public void alterProjection(String projection)

If you want to return something other than the list of entities represented by the passed Criteria object, you can alter the projection here to return a customized subset or superset of data. The projection will only affect the ResultSet for the data query, not the count query.

If you are projecting a composite object that does not directly extend the entity your Criteria object represents, then you will need to manually initialize the persistent bags using the methods exposed on CriteriaQueryRunner

isProjectionAltered

public boolean isProjectionAltered()

setGroupByClause

public void setGroupByClause(String groupByClause)

The groupBy clause can be set if and only if the projection is altered. The passed argument should not be prefixed with 'group by'; that part of the query will be auto-generated if the argument is non-null. The new projection must follow standard rules as they apply to statements with groupBy clauses.

setHavingClause

public void setHavingClause(String havingClause)

The having clause can be set if and only if the groupBy clause is set. The passed argument should not be prefixed with 'having'; that part of the query will be auto-generated if the argument is non-null. The having clause must follow standard rules as they apply to statements with groupBy clauses.

getQuery

public javax.persistence.Query getQuery(javax.persistence.EntityManager em)

getCountQuery

public javax.persistence.Query getCountQuery(javax.persistence.EntityManager em)

main

public static void main(String[] args)

testSubjectCriteria

public static void testSubjectCriteria()

testAlertCriteria

public static void testAlertCriteria()

testInheritanceCriteria

public static void testInheritanceCriteria()

testResourceGroupCriteria

public static void testResourceGroupCriteria()

testResourceCriteria

public static void testResourceCriteria()

getPageControl

public static org.rhq.core.domain.util.PageControl getPageControl(org.rhq.core.domain.criteria.Criteria criteria)