com.impetus.kundera.query

Class KunderaQuery

java.lang.Object

com.impetus.kundera.query.KunderaQuery

public class KunderaQuery
extends Object

The Class KunderaQuery.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	KunderaQuery.FilterClause The FilterClause class to hold a where clause predicate.
private class	KunderaQuery.JPAParameter<T>
static class	KunderaQuery.SortOrder The Enum SortOrder.
class	KunderaQuery.SortOrdering Containing SortOrder.
private static class	KunderaQuery.Type
private class	KunderaQuery.TypedParameter
class	KunderaQuery.UpdateClause

Field Summary

Fields

Modifier and Type	Field and Description
private String[]	aggregationResult
private org.eclipse.persistence.jpa.jpql.parser.DeleteStatement	deleteStatement
private String	entityAlias The entity alias.
private Class<?>	entityClass The entity class.
private String	entityName The entity name.
private javax.el.ExpressionFactory	expressionFactory
private String	filter The filter.
private Queue	filtersQueue The filters queue.
private String	from The from.
static String[]	INTER_CLAUSE_OPERATORS The Constant INTER_CLAUSE_OPERATORS.
static String[]	INTRA_CLAUSE_OPERATORS The Constant INTRA_CLAUSE_OPERATORS.
private boolean	isAggregate
private boolean	isDeleteUpdate
(package private) boolean	isNativeQuery
private String	jpaQuery
private org.eclipse.persistence.jpa.jpql.parser.JPQLExpression	jpqlExpression
private EntityManagerFactoryImpl.KunderaMetadata	kunderaMetadata
private static org.slf4j.Logger	logger The logger.
private String	ordering The ordering.
private Map<String,Object>	parametersMap
private String	persistenceUnit Persistence Unit(s).
private String[]	result The result.
private org.eclipse.persistence.jpa.jpql.parser.SelectStatement	selectStatement
static String[]	SINGLE_STRING_KEYWORDS The Constant SINGLE_STRING_KEYWORDS.
private List<KunderaQuery.SortOrdering>	sortOrders The sort orders.
private KunderaQuery.TypedParameter	typedParameter
private Queue<KunderaQuery.UpdateClause>	updateClauseQueue
private org.eclipse.persistence.jpa.jpql.parser.UpdateStatement	updateStatement

Constructor Summary

Constructors

Constructor and Description
KunderaQuery(String jpaQuery, EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata) Instantiates a new kundera query.

Method Summary

Methods

Modifier and Type	Method and Description
private void	addDiscriminatorClause(List<String> clauses, javax.persistence.metamodel.EntityType entityType)
void	addFilterClause(Object filterClause)
void	addFilterClause(String property, String condition, Object value, String fieldName)
private void	addTypedParameter(KunderaQuery.Type type, String parameter, KunderaQuery.FilterClause clause) Adds typed parameter to KunderaQuery.TypedParameter
private void	addTypedParameter(KunderaQuery.Type type, String parameter, KunderaQuery.UpdateClause clause) Adds typed parameter to KunderaQuery.TypedParameter
void	addUpdateClause(String property, String value)
Object	clone()
private void	filterJPAParameterInfo(KunderaQuery.Type type, String name, String fieldName)
String[]	getAggResult()
private String	getAttributeName(String fieldName)
List<Object>	getClauseValue(javax.persistence.Parameter param) Returns specific clause value.
List<Object>	getClauseValue(String paramString) Returns clause value for supplied parameter.
org.eclipse.persistence.jpa.jpql.parser.DeleteStatement	getDeleteStatement()
String	getEntityAlias()
Class	getEntityClass() Gets the entity class.
EntityMetadata	getEntityMetadata() Gets the entity metadata.
javax.el.ExpressionFactory	getExpressionFactory()
String	getFilter() Gets the filter.
Queue	getFilterClauseQueue() Gets the filter clause queue.
String	getFrom() Gets the from.
String	getJPAQuery()
org.eclipse.persistence.jpa.jpql.parser.JPQLExpression	getJpqlExpression()
private MetamodelImpl	getMetamodel(String pu) Gets the metamodel.
List<KunderaQuery.SortOrdering>	getOrdering() Gets the ordering.
Set<javax.persistence.Parameter<?>>	getParameters() Returns set of parameters.
Map<String,Object>	getParametersMap()
String	getPersistenceUnit() Gets the persistence units.
String[]	getResult() Gets the result.
org.eclipse.persistence.jpa.jpql.parser.SelectStatement	getSelectStatement()
Queue<KunderaQuery.UpdateClause>	getUpdateClauseQueue()
org.eclipse.persistence.jpa.jpql.parser.UpdateStatement	getUpdateStatement()
private static Object	getValue(Object value) Method to skip string literal as per JPA specification.
private void	initEntityClass() Inits the entity class.
private void	initFilter() Inits the filter.
private void	initiateJPQLObject(String jpaQuery)
private void	initUpdateClause()
boolean	isAggregated()
boolean	isAliasOnly() Method to check if required result is to get complete entity or a select scalar value.
boolean	isBound(javax.persistence.Parameter param) Parameter is bound if it holds any value, else will return false
boolean	isDeleteStatement()
boolean	isDeleteUpdate()
boolean	isNative()
boolean	isSelectStatement()
boolean	isUpdateClause()
boolean	isUpdateStatement()
private void	onTypedParameter(KunderaQuery.FilterClause filterClause) Depending upon filter value, if it starts with ":" then it is NAMED parameter, else if starts with "?", it will be INDEXED parameter.
private void	onTypedParameter(Object value, KunderaQuery.UpdateClause updateClause, String fieldName) Depending upon filter value, if it starts with ":" then it is NAMED parameter, else if starts with "?", it will be INDEXED parameter.
private void	parseOrdering(String ordering) Parses the ordering @See Order By Clause.
protected void	postParsingInit() Post parsing init.
void	setAggregated(boolean isAggregated)
void	setAggregationResult(String[] aggResult) Sets the aggregation result.
void	setDeleteStatement(org.eclipse.persistence.jpa.jpql.parser.DeleteStatement deleteStatement)
void	setExpressionFactory(javax.el.ExpressionFactory expressionFactory)
void	setFilter(String filter) Sets the filter.
void	setFrom(String from) Sets the from.
void	setGrouping(String groupingClause) Sets the grouping.
void	setIsDeleteUpdate(boolean b)
private void	setKunderaQueryTypeObject()
void	setOrdering(String ordering) Sets the ordering.
void	setParameter(int position, Object value)
void	setParameter(String name, Object value) Sets the parameter.
private void	setParameterValue(String name, Object value) Sets parameter value into filterClause, depending upon KunderaQuery.Type
void	setPersistenceUnit(String persistenceUnit) Sets the persistence unit.
void	setResult(String[] result) Sets the result.
void	setSelectStatement(org.eclipse.persistence.jpa.jpql.parser.SelectStatement selectStatement)
void	setUpdateStatement(org.eclipse.persistence.jpa.jpql.parser.UpdateStatement updateStatement)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

SINGLE_STRING_KEYWORDS

public static final String[] SINGLE_STRING_KEYWORDS

The Constant SINGLE_STRING_KEYWORDS.

INTER_CLAUSE_OPERATORS

public static final String[] INTER_CLAUSE_OPERATORS

The Constant INTER_CLAUSE_OPERATORS.

INTRA_CLAUSE_OPERATORS

public static final String[] INTRA_CLAUSE_OPERATORS

The Constant INTRA_CLAUSE_OPERATORS.

logger

private static org.slf4j.Logger logger

The logger.

result

private String[] result

The result.

aggregationResult

private String[] aggregationResult

from

private String from

The from.

filter

private String filter

The filter.

ordering

private String ordering

The ordering.

entityName

private String entityName

The entity name.

entityAlias

private String entityAlias

The entity alias.

entityClass

private Class<?> entityClass

The entity class.

sortOrders

private List<KunderaQuery.SortOrdering> sortOrders

The sort orders.

isAggregate

private boolean isAggregate

persistenceUnit

private String persistenceUnit

Persistence Unit(s).

filtersQueue

private Queue filtersQueue

The filters queue.

isDeleteUpdate

private boolean isDeleteUpdate

updateClauseQueue

private Queue<KunderaQuery.UpdateClause> updateClauseQueue

typedParameter

private KunderaQuery.TypedParameter typedParameter

parametersMap

private Map<String,Object> parametersMap

isNativeQuery

boolean isNativeQuery

jpaQuery

private String jpaQuery

kunderaMetadata

private final EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata

jpqlExpression

private org.eclipse.persistence.jpa.jpql.parser.JPQLExpression jpqlExpression

expressionFactory

private javax.el.ExpressionFactory expressionFactory

selectStatement

private org.eclipse.persistence.jpa.jpql.parser.SelectStatement selectStatement

updateStatement

private org.eclipse.persistence.jpa.jpql.parser.UpdateStatement updateStatement

deleteStatement

private org.eclipse.persistence.jpa.jpql.parser.DeleteStatement deleteStatement

Constructor Detail

KunderaQuery

public KunderaQuery(String jpaQuery,
            EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata)

Instantiates a new kundera query.

Parameters:

persistenceUnits - the persistence units

Method Detail

setExpressionFactory

public void setExpressionFactory(javax.el.ExpressionFactory expressionFactory)

Parameters:

expressionFactory - the expressionFactory to set

getJpqlExpression

public org.eclipse.persistence.jpa.jpql.parser.JPQLExpression getJpqlExpression()

Returns:

the jpqlExpression

initiateJPQLObject

private void initiateJPQLObject(String jpaQuery)

setKunderaQueryTypeObject

private void setKunderaQueryTypeObject()

getSelectStatement

public org.eclipse.persistence.jpa.jpql.parser.SelectStatement getSelectStatement()

Returns:

the selectStatement

setSelectStatement

public void setSelectStatement(org.eclipse.persistence.jpa.jpql.parser.SelectStatement selectStatement)

Parameters:

selectStatement - the selectStatement to set

setUpdateStatement

public void setUpdateStatement(org.eclipse.persistence.jpa.jpql.parser.UpdateStatement updateStatement)

Parameters:

updateStatement - the updateStatement to set

getUpdateStatement

public org.eclipse.persistence.jpa.jpql.parser.UpdateStatement getUpdateStatement()

Returns:

the updateStatement

getDeleteStatement

public org.eclipse.persistence.jpa.jpql.parser.DeleteStatement getDeleteStatement()

Returns:

the deleteStatement

setDeleteStatement

public void setDeleteStatement(org.eclipse.persistence.jpa.jpql.parser.DeleteStatement deleteStatement)

Parameters:

deleteStatement - the deleteStatement to set

isSelectStatement

public boolean isSelectStatement()

isDeleteStatement

public boolean isDeleteStatement()

isUpdateStatement

public boolean isUpdateStatement()

getExpressionFactory

public javax.el.ExpressionFactory getExpressionFactory()

Returns:

the expressionFactory

setGrouping

public void setGrouping(String groupingClause)

Sets the grouping.

Parameters:

groupingClause - the new grouping

setResult

public final void setResult(String[] result)

Sets the result.

Parameters:

result - the new result

setAggregationResult

public final void setAggregationResult(String[] aggResult)

Sets the aggregation result.

Parameters:

aggResult - the new result

getAggResult

public final String[] getAggResult()

Returns:

Aggregation result set

isAggregated

public boolean isAggregated()

Returns:

Query contains aggregation or not

setAggregated

public void setAggregated(boolean isAggregated)

Parameters:

isAggregated -

setFrom

public final void setFrom(String from)

Sets the from.

Parameters:

from - the new from

setFilter

public final void setFilter(String filter)

Sets the filter.

Parameters:

filter - the new filter

setOrdering

public final void setOrdering(String ordering)

Sets the ordering.

Parameters:

ordering - the new ordering

getFilter

public final String getFilter()

Gets the filter.

Returns:

the filter

getFrom

public final String getFrom()

Gets the from.

Returns:

the from

getOrdering

public final List<KunderaQuery.SortOrdering> getOrdering()

Gets the ordering.

Returns:

the ordering

getResult

public final String[] getResult()

Gets the result.

Returns:

the result

getParametersMap

public Map<String,Object> getParametersMap()

Returns:

Map of query parameters.

isAliasOnly

public final boolean isAliasOnly()

Method to check if required result is to get complete entity or a select scalar value.

Returns:

true, if it result is for complete alias.

getParameters

public Set<javax.persistence.Parameter<?>> getParameters()

Returns set of parameters.

Returns:

jpaParameters

isBound

public boolean isBound(javax.persistence.Parameter param)

Parameter is bound if it holds any value, else will return false

Parameters:

param -

Returns:

getClauseValue

public List<Object> getClauseValue(String paramString)

Returns clause value for supplied parameter.

Parameters:

paramString -

Returns:

getClauseValue

public List<Object> getClauseValue(javax.persistence.Parameter param)

Returns specific clause value.

Parameters:

param - parameter

Returns:

clause value.

postParsingInit

protected void postParsingInit()

Post parsing init.

initUpdateClause

private void initUpdateClause()

initEntityClass

private void initEntityClass()

Inits the entity class.

initFilter

private void initFilter()

Inits the filter.

addDiscriminatorClause

private void addDiscriminatorClause(List<String> clauses,
                          javax.persistence.metamodel.EntityType entityType)

onTypedParameter

private void onTypedParameter(Object value,
                    KunderaQuery.UpdateClause updateClause,
                    String fieldName)

Depending upon filter value, if it starts with ":" then it is NAMED parameter, else if starts with "?", it will be INDEXED parameter.

Parameters:

tokens - tokens

filterClause - filter clauses.

onTypedParameter

private void onTypedParameter(KunderaQuery.FilterClause filterClause)

Depending upon filter value, if it starts with ":" then it is NAMED parameter, else if starts with "?", it will be INDEXED parameter.

Parameters:

tokens - tokens

filterClause - filter clauses.

addTypedParameter

private void addTypedParameter(KunderaQuery.Type type,
                     String parameter,
                     KunderaQuery.FilterClause clause)

Adds typed parameter to KunderaQuery.TypedParameter

Parameters:

type - type of parameter(e.g. NAMED/INDEXED)

parameter - parameter name.

clause - filter clause.

addTypedParameter

private void addTypedParameter(KunderaQuery.Type type,
                     String parameter,
                     KunderaQuery.UpdateClause clause)

Adds typed parameter to KunderaQuery.TypedParameter

Parameters:

type - type of parameter(e.g. NAMED/INDEXED)

parameter - parameter name.

clause - filter clause.

filterJPAParameterInfo

private void filterJPAParameterInfo(KunderaQuery.Type type,
                          String name,
                          String fieldName)

Parameters:

type -

name -

fieldName -

getAttributeName

private String getAttributeName(String fieldName)

Parameters:

fieldName -

Returns:

setParameter

public final void setParameter(String name,
                Object value)

Sets the parameter.

Parameters:

name - the name

value - the value

setParameter

public final void setParameter(int position,
                Object value)

setParameterValue

private void setParameterValue(String name,
                     Object value)

Sets parameter value into filterClause, depending upon KunderaQuery.Type

Parameters:

name - parameter name.

value - parameter value.

getEntityClass

public final Class getEntityClass()

Gets the entity class.

Returns:

the entityClass

getEntityAlias

public final String getEntityAlias()

isNative

public boolean isNative()

getEntityMetadata

public final EntityMetadata getEntityMetadata()

Gets the entity metadata.

Returns:

the entity metadata

getFilterClauseQueue

public final Queue getFilterClauseQueue()

Gets the filter clause queue.

Returns:

the filters

clone

public final Object clone()
                   throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

toString

public final String toString()

Overrides:

toString in class Object

getMetamodel

private MetamodelImpl getMetamodel(String pu)

Gets the metamodel.

Returns:

the metamodel

getPersistenceUnit

public String getPersistenceUnit()

Gets the persistence units.

Returns:

the persistenceUnits

setPersistenceUnit

public void setPersistenceUnit(String persistenceUnit)

Sets the persistence unit.

Parameters:

persistenceUnit - the new persistence unit

parseOrdering

private void parseOrdering(String ordering)

Parses the ordering @See Order By Clause.

Parameters:

ordering - the ordering

getUpdateClauseQueue

public Queue<KunderaQuery.UpdateClause> getUpdateClauseQueue()

Returns:

the updateClauseQueue

isUpdateClause

public boolean isUpdateClause()

addUpdateClause

public void addUpdateClause(String property,
                   String value)

Parameters:

property -

value -

addFilterClause

public void addFilterClause(String property,
                   String condition,
                   Object value,
                   String fieldName)

Parameters:

property -

condition -

value -

fieldName -

addFilterClause

public void addFilterClause(Object filterClause)

Parameters:

filterClause -

setIsDeleteUpdate

public void setIsDeleteUpdate(boolean b)

Parameters:

b -

isDeleteUpdate

public boolean isDeleteUpdate()

getJPAQuery

public String getJPAQuery()

getValue

private static Object getValue(Object value)

Method to skip string literal as per JPA specification. if literal starts is enclose within "''" then skip "'" and include "'" in case of "''" replace it with "'".

Parameters:

value - value.

Returns:

replaced string in case of string, else will return original value.