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org.eclipse.persistence.jpa.internal.jpql.parser
Interface Expression

All Known Implementing Classes:

AbsExpression, AbstractConditionalClause, AbstractDoubleEncapsulatedExpression, AbstractEncapsulatedExpression, AbstractExpression, AbstractFromClause, AbstractPathExpression, AbstractSchemaName, AbstractSelectClause, AbstractSelectStatement, AbstractSingleEncapsulatedExpression, AbstractTripleEncapsulatedExpression, AdditionExpression, AggregateFunction, AllOrAnyExpression, AndExpression, ArithmeticExpression, ArithmeticFactor, AvgFunction, BadExpression, BetweenExpression, CaseExpression, CoalesceExpression, CollectionExpression, CollectionMemberDeclaration, CollectionMemberExpression, CollectionValuedPathExpression, ComparisonExpression, CompoundExpression, ConcatExpression, ConstructorExpression, CountFunction, DateTime, DeleteClause, DeleteStatement, DivisionExpression, EmptyCollectionComparisonExpression, EncapsulatedIdentificationVariableExpression, EntityTypeLiteral, EntryExpression, ExistsExpression, FromClause, FuncExpression, GroupByClause, HavingClause, IdentificationVariable, IdentificationVariableDeclaration, IndexExpression, InExpression, InputParameter, Join, JoinFetch, JPQLExpression, KeyExpression, KeywordExpression, LengthExpression, LikeExpression, LocateExpression, LogicalExpression, LowerExpression, MaxFunction, MinFunction, ModExpression, MultiplicationExpression, NotExpression, NullComparisonExpression, NullExpression, NullIfExpression, NumericLiteral, ObjectExpression, OrderByClause, OrderByItem, OrExpression, RangeVariableDeclaration, ResultVariable, SelectClause, SelectStatement, SimpleFromClause, SimpleSelectClause, SimpleSelectStatement, SizeExpression, SqrtExpression, StateFieldPathExpression, StringLiteral, SubExpression, SubstringExpression, SubtractionExpression, SumFunction, TreatExpression, TrimExpression, TypeExpression, UnknownExpression, UpdateClause, UpdateItem, UpdateStatement, UpperExpression, ValueExpression, WhenClause, WhereClause

public interface Expression

This is the root interface of the Java Persistence query parsed tree. The parser supports the latest release of the JPQL functional specification, which is JSR 317: Java™ Persistence 2.0

The BNF for the Java Persistence query language, version 2.0:

 QL_statement ::= select_statement | update_statement | delete_statement

 select_statement ::= select_clause from_clause [where_clause] [groupby_clause] [having_clause] [orderby_clause]

 update_statement ::= update_clause [where_clause]

 delete_statement ::= delete_clause [where_clause]

 from_clause ::= FROM identification_variable_declaration {, {identification_variable_declaration | collection_member_declaration}}*

 identification_variable_declaration ::= range_variable_declaration { join | fetch_join }*

 range_variable_declaration ::= entity_name [AS] identification_variable

 join ::= join_spec join_association_path_expression [AS] identification_variable

 fetch_join ::= join_spec FETCH join_association_path_expression

 join_spec ::= [ LEFT [OUTER] | INNER ] JOIN

 join_association_path_expression ::= join_collection_valued_path_expression |
                                      join_single_valued_path_expression

 join_collection_valued_path_expression ::= identification_variable.{single_valued_embeddable_object_field.}*collection_valued_field

 join_single_valued_path_expression ::= identification_variable.{single_valued_embeddable_object_field.}*single_valued_object_field

 collection_member_declaration ::= IN (collection_valued_path_expression) [AS] identification_variable

 qualified_identification_variable ::= KEY(identification_variable) |
                                       VALUE(identification_variable) |
                                       ENTRY(identification_variable)

 single_valued_path_expression ::= qualified_identification_variable |
                                   state_field_path_expression |
                                   single_valued_object_path_expression

 general_identification_variable ::= identification_variable |
                                     KEY(identification_variable) |
                                     VALUE(identification_variable)

 state_field_path_expression ::= general_identification_variable.{single_valued_object_field.}*state_field

 single_valued_object_path_expression ::= general_identification_variable.{single_valued_object_field.}*single_valued_object_field

 collection_valued_path_expression ::= general_identification_variable.{single_valued_object_field.}*collection_valued_field

 update_clause ::= UPDATE entity_name [[AS] identification_variable] SET update_item {, update_item}*

 update_item ::= [identification_variable.]{state_field | single_valued_object_field} = new_value

 new_value ::= scalar_expression | simple_entity_expression | NULL

 delete_clause ::= DELETE FROM entity_name [[AS] identification_variable]

 select_clause ::= SELECT [DISTINCT] select_item {, select_item}*

 select_item ::= select_expression [[AS] result_variable]

 select_expression ::= single_valued_path_expression |
                       scalar_expression |
                       aggregate_expression |
                       identification_variable |
                       OBJECT(identification_variable) |
                       constructor_expression

 constructor_expression ::= NEW constructor_name ( constructor_item {, constructor_item}* )

 constructor_item ::= single_valued_path_expression |
                      scalar_expression |
                      aggregate_expression |
                      identification_variable

 aggregate_expression ::= { AVG | MAX | MIN | SUM } ([DISTINCT] state_field_path_expression) |
                          COUNT ([DISTINCT] identification_variable |
                                            state_field_path_expression |
                                            single_valued_object_path_expression)

 where_clause ::= WHERE conditional_expression

 groupby_clause ::= GROUP BY groupby_item {, groupby_item}*

 groupby_item ::= single_valued_path_expression | identification_variable

 having_clause ::= HAVING conditional_expression

 orderby_clause ::= ORDER BY orderby_item {, orderby_item}*

 orderby_item ::= state_field_path_expression | result_variable [ ASC | DESC ]

 subquery ::= simple_select_clause subquery_from_clause [where_clause] [groupby_clause] [having_clause]

 subquery_from_clause ::= FROM subselect_identification_variable_declaration {, subselect_identification_variable_declaration | collection_member_declaration}*

 subselect_identification_variable_declaration ::= identification_variable_declaration |
                                                   derived_path_expression [AS] identification_variable {join}* |
                                                   derived_collection_member_declaration

 derived_path_expression ::= superquery_identification_variable.{single_valued_object_field.}*collection_valued_field |
                             superquery_identification_variable.{single_valued_object_field.}*single_valued_object_field

 derived_collection_member_declaration ::= IN superquery_identification_variable.{single_valued_object_field.}*collection_valued_field

 simple_select_clause ::= SELECT [DISTINCT] simple_select_expression

 simple_select_expression ::= single_valued_path_expression |
                              scalar_expression |
                              aggregate_expression |
                              identification_variable

 scalar_expression ::= simple_arithmetic_expression |
                       string_primary |
                       enum_primary |
                       datetime_primary |
                       boolean_primary |
                       case_expression |
                       entity_type_expression

 conditional_expression ::= conditional_term | conditional_expression OR conditional_term

 conditional_term ::= conditional_factor | conditional_term AND conditional_factor

 conditional_factor ::= [ NOT ] conditional_primary

 conditional_primary ::= simple_cond_expression | (conditional_expression)

 simple_cond_expression ::= comparison_expression |
                            between_expression |
                            in_expression |
                            like_expression |
                            null_comparison_expression |
                            empty_collection_comparison_expression |
                            collection_member_expression |
                            exists_expression

 between_expression ::= arithmetic_expression [NOT] BETWEEN arithmetic_expression AND arithmetic_expression |
                        string_expression [NOT] BETWEEN string_expression AND string_expression |
                        datetime_expression [NOT] BETWEEN datetime_expression AND datetime_expression

 in_expression ::= {state_field_path_expression | type_discriminator} [NOT] IN { ( in_item {, in_item}* ) | (subquery) | collection_valued_input_parameter }

 in_item ::= literal | single_valued_input_parameter

 like_expression ::= string_expression [NOT] LIKE pattern_value [ESCAPE escape_character]

 null_comparison_expression ::= {single_valued_path_expression | input_parameter} IS [NOT] NULL

 empty_collection_comparison_expression ::= collection_valued_path_expression IS [NOT] EMPTY

 collection_member_expression ::= entity_or_value_expression [NOT] MEMBER [OF] collection_valued_path_expression

 entity_or_value_expression ::= single_valued_object_path_expression |
                                state_field_path_expression |
                                simple_entity_or_value_expression

 simple_entity_or_value_expression ::= identification_variable |
                                       input_parameter |
                                       literal

 exists_expression ::= [NOT] EXISTS (subquery)

 all_or_any_expression ::= { ALL | ANY | SOME} (subquery)

 comparison_expression ::= string_expression comparison_operator {string_expression | all_or_any_expression} |
                           boolean_expression { = | <> } {boolean_expression | all_or_any_expression} |
                           enum_expression { =|<> } {enum_expression | all_or_any_expression} |
                           datetime_expression comparison_operator {datetime_expression | all_or_any_expression} |
                           entity_expression { = | <> } {entity_expression | all_or_any_expression} |
                           arithmetic_expression comparison_operator {arithmetic_expression | all_or_any_expression} |
                           entity_type_expression { = | <> } entity_type_expression}

 comparison_operator ::= = | > | >= | < | <= | <>

 arithmetic_expression ::= simple_arithmetic_expression | (subquery)

 simple_arithmetic_expression ::= arithmetic_term | simple_arithmetic_expression { + | - } arithmetic_term

 arithmetic_term ::= arithmetic_factor | arithmetic_term { * | / } arithmetic_factor

 arithmetic_factor ::= [{ + | - }] arithmetic_primary

 arithmetic_primary ::= state_field_path_expression |
                        numeric_literal |
                        (simple_arithmetic_expression) |
                        input_parameter |
                        functions_returning_numerics |
                        aggregate_expression |
                        case_expression

 string_expression ::= string_primary | (subquery)

 string_primary ::= state_field_path_expression |
                    string_literal |
                    input_parameter |
                    functions_returning_strings |
                    aggregate_expression |
                    case_expression

 datetime_primary ::= state_field_path_expression |
                      input_parameter |
                      functions_returning_datetime |
                      aggregate_expression |
                      case_expression |
                      date_time_timestamp_literal

 datetime_expression ::= datetime_primary | (subquery)

 boolean_expression ::= boolean_primary | (subquery)

 boolean_primary ::= state_field_path_expression |
                     boolean_literal |
                     input_parameter |
                     case_expression

 enum_expression ::= enum_primary | (subquery)

 enum_primary ::= state_field_path_expression |
                  enum_literal |
                  input_parameter |
                  case_expression

 entity_expression ::= single_valued_object_path_expression | simple_entity_expression

 simple_entity_expression ::= identification_variable |
                              input_parameter

 entity_type_expression ::= type_discriminator |
                            entity_type_literal |
                            input_parameter

 type_discriminator ::= TYPE(identification_variable | single_valued_object_path_expression | input_parameter)

 functions_returning_numerics ::= LENGTH(string_primary) |
                                  LOCATE(string_primary, string_primary[, simple_arithmetic_expression]) |
                                  ABS(simple_arithmetic_expression) |
                                  SQRT(simple_arithmetic_expression) |
                                  MOD(simple_arithmetic_expression, simple_arithmetic_expression) |
                                  SIZE(collection_valued_path_expression) |
                                  INDEX(identification_variable)

 functions_returning_datetime ::= CURRENT_DATE | CURRENT_TIME | CURRENT_TIMESTAMP | literalTemporal

 functions_returning_strings ::= CONCAT(string_primary, string_primary {, string_primary}*) |
                                 SUBSTRING(string_primary, simple_arithmetic_expression [, simple_arithmetic_expression]) |
                                 TRIM([[trim_specification] [trim_character] FROM] string_primary) |
                                 LOWER(string_primary) |
                                 UPPER(string_primary)

 trim_specification ::= LEADING | TRAILING | BOTH

 trim_character ::= string_literal | input_parameter

 case_expression ::= general_case_expression |
                     simple_case_expression |
                     coalesce_expression |
                     nullif_expression

 general_case_expression ::= CASE when_clause {when_clause}* ELSE scalar_expression END

 when_clause ::= WHEN conditional_expression THEN scalar_expression

 simple_case_expression ::= CASE case_operand simple_when_clause {simple_when_clause}* ELSE scalar_expression END

 case_operand ::= state_field_path_expression | type_discriminator

 simple_when_clause ::= WHEN scalar_expression THEN scalar_expression

 coalesce_expression ::= COALESCE(scalar_expression {, scalar_expression}+)

 nullif_expression ::= NULLIF(scalar_expression, scalar_expression)

 boolean_literal ::= TRUE | FALSE

 string_literal ::= 'string'

 enum_literal ::= {package_name.}*EnumType.CONSTANT

 literalTemporal ::= date_literal | TIME_LITERAL | TIMESTAMP_LITERAL

 date_literal ::= "{" "'d'" (' ' | '\t')+ '\'' DATE_STRING '\'' (' ' | '\t')* "}"

 TIME_LITERAL ::= "{" "'t'" (' ' | '\t')+ '\'' TIME_STRING '\'' (' ' | '\t')* "}"

 TIMESTAMP_LITERAL ::= "{" ('ts') (' ' | '\t')+ '\'' DATE_STRING ' ' TIME_STRING '\'' (' ' | '\t')* "}"

 DATE_STRING ::= '0'..'9' '0'..'9' '0'..'9' '0'..'9' '-' '0'..'9' '0'..'9' '-' '0'..'9' '0'..'9'

 TIME_STRING ::= '0'..'9' ('0'..'9')? ':' '0'..'9' '0'..'9' ':' '0'..'9' '0'..'9' '.' '0'..'9'*
 

The following BNFs is the EclipseLink's extension over the standard JPQL BNF.

join ::= join_spec { join_association_path_expression | join_treat_association_path_expression } [AS] identification_variable

 join_treat_association_path_expression ::= TREAT(join_association_path_expression AS entity_type_literal)

 functions_returning_strings ::= ... | func_expression

 functions_returning_numerics ::= ... | func_expression

 functions_returning_datetime ::= ... | func_expression

 func_expression ::= FUNC (func_name {, func_item}*)

 func_item ::= scalar_expression (NOT SURE)

 orderby_item ::= state_field_path_expression | result_variable | scalar_expression [ ASC | DESC ]

 groupby_item ::= single_valued_path_expression | identification_variable | scalar_expression

 aggregate_expression ::= { AVG | MAX | MIN | SUM | COUNT } ([DISTINCT] scalar_expression)

 in_item ::= literal | single_valued_input_parameter | scalar_expression

 

Since:

2.3

Version:

2.3

Author:

Pascal Filion

Field Summary

static java.lang.String	ABS The constant for 'ABS'.
static java.lang.String	ALL The constant for 'ALL'.
static java.lang.String	AND The constant for 'AND'.
static java.lang.String	ANY The constant for 'ANY'.
static java.lang.String	AS The constant for 'AS'.
static java.lang.String	ASC The constant for 'ASC'.
static java.lang.String	AVG The constant for 'AVG'.
static java.lang.String	BETWEEN The constant for 'BETWEEN'.
static java.lang.String	BIT_LENGTH The constant for 'BIT_LENGTH', which is an unused keyword.
static java.lang.String	BOTH The constant for 'BOTH'.
static java.lang.String	CASE The constant for the identifier 'CASE'.
static java.lang.String	CHAR_LENGTH The constant for 'CHAR_LENGTH', which is an unused keyword.
static java.lang.String	CHARACTER_LENGTH The constant for 'CHARACTER_LENGTH', which is an unused keyword.
static java.lang.String	CLASS The constant for 'CLASS', which is an unused keyword.
static java.lang.String	COALESCE The constant for 'COALESCE'.
static java.lang.String	CONCAT The constant for 'CONCAT'.
static java.lang.String	COUNT The constant for 'COUNT'.
static java.lang.String	CURRENT_DATE The constant for 'CURRENT_DATE'.
static java.lang.String	CURRENT_TIME The constant for 'CURRENT_DATE'.
static java.lang.String	CURRENT_TIMESTAMP The constant for 'CURRENT_TIMESTAMP'.
static java.lang.String	DELETE The constant for 'DELETE'.
static java.lang.String	DELETE_FROM The constant for 'DELETE FROM'.
static java.lang.String	DESC The constant for 'DESC'.
static java.lang.String	DIFFERENT The constant for '<>'.
static java.lang.String	DISTINCT The constant for 'DISTINCT'.
static java.lang.String	DIVISION The constant for the division sign '/'.
static java.lang.String	ELSE The constant for the identifier 'ELSE'.
static java.lang.String	EMPTY The constant for 'EMPTY'.
static java.lang.String	END The constant for the identifier 'END'.
static java.lang.String	ENTRY The constant for 'ENTRY'.
static java.lang.String	EQUAL The constant for '='.
static java.lang.String	ESCAPE The constant for 'ESCAPE'.
static java.lang.String	EXISTS The constant for 'EXISTS'.
static java.lang.String	FALSE The constant for 'FALSE'.
static java.lang.String	FETCH A constant for 'FETCH'.
static java.lang.String	FROM The constant for 'FROM'.
static java.lang.String	FUNC The constant 'FUNC'.
static java.lang.String	GREATER_THAN The constant for '>'.
static java.lang.String	GREATER_THAN_OR_EQUAL The constant for '>='.
static java.lang.String	GROUP_BY The constant for 'GROUP BY'.
static java.lang.String	HAVING The constant for 'HAVING'.
static java.lang.String	IN The constant for 'IN'.
static java.lang.String	INDEX The constant for 'INDEX'.
static java.lang.String	INNER The constant for 'INNER'.
static java.lang.String	INNER_JOIN The constant for 'INNER JOIN'.
static java.lang.String	INNER_JOIN_FETCH The constant for 'INNER JOIN FETCH'.
static java.lang.String	IS The constant for 'IS'.
static java.lang.String	IS_EMPTY The constant for 'IS EMPTY'.
static java.lang.String	IS_NOT_EMPTY The constant for 'IS NOT EMPTY'.
static java.lang.String	IS_NOT_NULL The constant for 'IS NOT NULL'.
static java.lang.String	IS_NULL The constant for 'IS NULL'.
static java.lang.String	JOIN The constant for 'JOIN'.
static java.lang.String	JOIN_FETCH The constant for 'JOIN FETCH'.
static java.lang.String	KEY The constant for 'KEY'.
static java.lang.String	LEADING The constant for 'LEADING'.
static java.lang.String	LEFT The constant for 'LEFT'.
static java.lang.String	LEFT_JOIN The constant for 'LEFT JOIN'.
static java.lang.String	LEFT_JOIN_FETCH The constant for 'LEFT JOIN FETCH'.
static java.lang.String	LEFT_OUTER_JOIN The constant for 'LEFT OUTER JOIN'.
static java.lang.String	LEFT_OUTER_JOIN_FETCH The constant for 'LEFT OUTER JOIN FETCH'.
static java.lang.String	LENGTH The constant for 'LENGTH'.
static java.lang.String	LIKE The constant for 'LIKE'.
static java.lang.String	LOCATE The constant for 'LOCATE'.
static java.lang.String	LOWER The constant for 'LOWER'.
static java.lang.String	LOWER_THAN The constant for '<'.
static java.lang.String	LOWER_THAN_OR_EQUAL The constant for '<='.
static java.lang.String	MAX The constant for 'MAX'.
static java.lang.String	MEMBER The constant for 'MEMBER'.
static java.lang.String	MEMBER_OF The constant for 'MEMBER OF'.
static java.lang.String	MIN The constant for 'MIN'.
static java.lang.String	MINUS The constant for the minus sign '-'.
static java.lang.String	MOD The constant for 'MOD'.
static java.lang.String	MULTIPLICATION The constant for multiplication sign '*'.
static java.lang.String	NAMED_PARAMETER The constant for ':'.
static java.lang.String	NEW The constant for 'NEW'.
static java.lang.String	NOT The constant for 'NOT'.
static java.lang.String	NOT_BETWEEN The constant for 'NOT BETWEEN'.
static java.lang.String	NOT_EXISTS The constant for 'NOT EXISTS'.
static java.lang.String	NOT_IN The constant for 'NOT IN'.
static java.lang.String	NOT_LIKE The constant for 'NOT LIKE'.
static java.lang.String	NOT_MEMBER The constant for 'NOT MEMBER'.
static java.lang.String	NOT_MEMBER_OF The constant for 'NOT MEMBER OF'.
static java.lang.String	NULL The constant for 'NULL'.
static java.lang.String	NULLIF The constant for 'NULLIF'.
static java.lang.String	OBJECT The constant for 'OBJECT'.
static java.lang.String	OF The constant for 'OF'.
static java.lang.String	OR The constant for 'OR'.
static java.lang.String	ORDER_BY The constant for 'ORDER BY'.
static java.lang.String	OUTER The constant for 'OUTER'.
static java.lang.String	PLUS The constant for for the plus sign '+'.
static java.lang.String	POSITION The constant for 'POSITION', which is an unused keyword.
static java.lang.String	POSITIONAL_PARAMETER The constant for '?'.
static java.lang.String	QUOTE The constant for single quote.
static java.lang.String	SELECT The constant for 'SELECT'.
static java.lang.String	SET The constant for 'SET'.
static java.lang.String	SIZE The constant for 'SIZE'.
static java.lang.String	SOME The constant for 'SOME'.
static java.lang.String	SQRT The constant for 'SQRT'.
static java.lang.String	SUBSTRING The constant for 'SUBSTRING'.
static java.lang.String	SUM The constant for 'SUM'.
static java.lang.String	THEN The constant for 'THEN'.
static java.lang.String	TRAILING The constant for 'TRAILING'.
static java.lang.String	TREAT The constant for 'TREAT'.
static java.lang.String	TRIM The constant for 'TRIM'.
static java.lang.String	TRUE The constant for 'TRUE'.
static java.lang.String	TYPE The constant for 'TYPE'.
static java.lang.String	UNKNOWN The constant for 'UNKNOWN', which is an unused keyword.
static java.lang.String	UPDATE The constant for 'UPDATE'.
static java.lang.String	UPPER The constant for 'UPPER'.
static java.lang.String	VALUE The constant for 'VALUE'.
static java.lang.String	WHEN The constant for the identifier 'WHEN'.
static java.lang.String	WHERE The constant for 'WHERE'.

Method Summary

void	accept(ExpressionVisitor visitor) Visits this Expression by the given visitor.
void	acceptChildren(ExpressionVisitor visitor) Visits the children of this Expression.
java.util.ListIterator<Expression>	children() Returns the children of this Expression.
Expression[]	getChildren() Returns the children of this Expression.
Expression	getParent() Returns the parent of this Expression.
JPQLExpression	getRoot() Retrieves the root node of the parsed tree hierarchy.
boolean	isAncestor(Expression expression) Determines whether this Expression is a parent of the given Expression.
java.lang.String	toActualText() Generates a string representation of this Expression, which needs to include any characters that are considered virtual, i.e. that was parsed when the query is incomplete and is needed for functionality like content assist.
java.lang.String	toParsedText() Returns a string representation of this Expression and its children.

Field Detail

ABS

static final java.lang.String ABS

The constant for 'ABS'.

See Also:

Constant Field Values

ALL

static final java.lang.String ALL

The constant for 'ALL'.

See Also:

Constant Field Values

AND

static final java.lang.String AND

The constant for 'AND'.

See Also:

Constant Field Values

ANY

static final java.lang.String ANY

The constant for 'ANY'.

See Also:

Constant Field Values

AS

static final java.lang.String AS

The constant for 'AS'.

See Also:

Constant Field Values

ASC

static final java.lang.String ASC

The constant for 'ASC'.

See Also:

Constant Field Values

AVG

static final java.lang.String AVG

The constant for 'AVG'.

See Also:

Constant Field Values

BETWEEN

static final java.lang.String BETWEEN

The constant for 'BETWEEN'.

See Also:

Constant Field Values

BIT_LENGTH

static final java.lang.String BIT_LENGTH

The constant for 'BIT_LENGTH', which is an unused keyword.

See Also:

Constant Field Values

BOTH

static final java.lang.String BOTH

The constant for 'BOTH'.

See Also:

Constant Field Values

CASE

static final java.lang.String CASE

The constant for the identifier 'CASE'.

See Also:

Constant Field Values

CHAR_LENGTH

static final java.lang.String CHAR_LENGTH

The constant for 'CHAR_LENGTH', which is an unused keyword.

See Also:

Constant Field Values

CHARACTER_LENGTH

static final java.lang.String CHARACTER_LENGTH

The constant for 'CHARACTER_LENGTH', which is an unused keyword.

See Also:

Constant Field Values

CLASS

static final java.lang.String CLASS

The constant for 'CLASS', which is an unused keyword.

See Also:

Constant Field Values

COALESCE

static final java.lang.String COALESCE

The constant for 'COALESCE'.

See Also:

Constant Field Values

CONCAT

static final java.lang.String CONCAT

The constant for 'CONCAT'.

See Also:

Constant Field Values

COUNT

static final java.lang.String COUNT

The constant for 'COUNT'.

See Also:

Constant Field Values

CURRENT_DATE

static final java.lang.String CURRENT_DATE

The constant for 'CURRENT_DATE'.

See Also:

Constant Field Values

CURRENT_TIME

static final java.lang.String CURRENT_TIME

The constant for 'CURRENT_DATE'.

See Also:

Constant Field Values

CURRENT_TIMESTAMP

static final java.lang.String CURRENT_TIMESTAMP

The constant for 'CURRENT_TIMESTAMP'.

See Also:

Constant Field Values

DELETE

static final java.lang.String DELETE

The constant for 'DELETE'.

See Also:

Constant Field Values

DELETE_FROM

static final java.lang.String DELETE_FROM

The constant for 'DELETE FROM'.

See Also:

Constant Field Values

DESC

static final java.lang.String DESC

The constant for 'DESC'.

See Also:

Constant Field Values

DIFFERENT

static final java.lang.String DIFFERENT

The constant for '<>'.

See Also:

Constant Field Values

DISTINCT

static final java.lang.String DISTINCT

The constant for 'DISTINCT'.

See Also:

Constant Field Values

DIVISION

static final java.lang.String DIVISION

The constant for the division sign '/'.

See Also:

Constant Field Values

ELSE

static final java.lang.String ELSE

The constant for the identifier 'ELSE'.

See Also:

Constant Field Values

EMPTY

static final java.lang.String EMPTY

The constant for 'EMPTY'.

See Also:

Constant Field Values

END

static final java.lang.String END

The constant for the identifier 'END'.

See Also:

Constant Field Values

ENTRY

static final java.lang.String ENTRY

The constant for 'ENTRY'.

See Also:

Constant Field Values

EQUAL

static final java.lang.String EQUAL

The constant for '='.

See Also:

Constant Field Values

ESCAPE

static final java.lang.String ESCAPE

The constant for 'ESCAPE'.

See Also:

Constant Field Values

EXISTS

static final java.lang.String EXISTS

The constant for 'EXISTS'.

See Also:

Constant Field Values

FALSE

static final java.lang.String FALSE

The constant for 'FALSE'.

See Also:

Constant Field Values

FETCH

static final java.lang.String FETCH

A constant for 'FETCH'.

See Also:

Constant Field Values

FROM

static final java.lang.String FROM

The constant for 'FROM'.

See Also:

Constant Field Values

FUNC

static final java.lang.String FUNC

The constant 'FUNC'.

See Also:

Constant Field Values

GREATER_THAN

static final java.lang.String GREATER_THAN

The constant for '>'.

See Also:

Constant Field Values

GREATER_THAN_OR_EQUAL

static final java.lang.String GREATER_THAN_OR_EQUAL

The constant for '>='.

See Also:

Constant Field Values

GROUP_BY

static final java.lang.String GROUP_BY

The constant for 'GROUP BY'.

See Also:

Constant Field Values

HAVING

static final java.lang.String HAVING

The constant for 'HAVING'.

See Also:

Constant Field Values

IN

static final java.lang.String IN

The constant for 'IN'.

See Also:

Constant Field Values

INDEX

static final java.lang.String INDEX

The constant for 'INDEX'.

See Also:

Constant Field Values

INNER

static final java.lang.String INNER

The constant for 'INNER'.

See Also:

Constant Field Values

INNER_JOIN

static final java.lang.String INNER_JOIN

The constant for 'INNER JOIN'.

See Also:

Constant Field Values

INNER_JOIN_FETCH

static final java.lang.String INNER_JOIN_FETCH

The constant for 'INNER JOIN FETCH'.

See Also:

Constant Field Values

IS

static final java.lang.String IS

The constant for 'IS'.

See Also:

Constant Field Values

IS_EMPTY

static final java.lang.String IS_EMPTY

The constant for 'IS EMPTY'.

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Constant Field Values

IS_NOT_EMPTY

static final java.lang.String IS_NOT_EMPTY

The constant for 'IS NOT EMPTY'.

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Constant Field Values

IS_NOT_NULL

static final java.lang.String IS_NOT_NULL

The constant for 'IS NOT NULL'.

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Constant Field Values

IS_NULL

static final java.lang.String IS_NULL

The constant for 'IS NULL'.

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Constant Field Values

JOIN

static final java.lang.String JOIN

The constant for 'JOIN'.

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Constant Field Values

JOIN_FETCH

static final java.lang.String JOIN_FETCH

The constant for 'JOIN FETCH'.

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Constant Field Values

KEY

static final java.lang.String KEY

The constant for 'KEY'.

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Constant Field Values

LEADING

static final java.lang.String LEADING

The constant for 'LEADING'.

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Constant Field Values

LEFT

static final java.lang.String LEFT

The constant for 'LEFT'.

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Constant Field Values

LEFT_JOIN

static final java.lang.String LEFT_JOIN

The constant for 'LEFT JOIN'.

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Constant Field Values

LEFT_JOIN_FETCH

static final java.lang.String LEFT_JOIN_FETCH

The constant for 'LEFT JOIN FETCH'.

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Constant Field Values

LEFT_OUTER_JOIN

static final java.lang.String LEFT_OUTER_JOIN

The constant for 'LEFT OUTER JOIN'.

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Constant Field Values

LEFT_OUTER_JOIN_FETCH

static final java.lang.String LEFT_OUTER_JOIN_FETCH

The constant for 'LEFT OUTER JOIN FETCH'.

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Constant Field Values

LENGTH

static final java.lang.String LENGTH

The constant for 'LENGTH'.

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Constant Field Values

LIKE

static final java.lang.String LIKE

The constant for 'LIKE'.

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Constant Field Values

LOCATE

static final java.lang.String LOCATE

The constant for 'LOCATE'.

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Constant Field Values

LOWER

static final java.lang.String LOWER

The constant for 'LOWER'.

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Constant Field Values

LOWER_THAN

static final java.lang.String LOWER_THAN

The constant for '<'.

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Constant Field Values

LOWER_THAN_OR_EQUAL

static final java.lang.String LOWER_THAN_OR_EQUAL

The constant for '<='.

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Constant Field Values

MAX

static final java.lang.String MAX

The constant for 'MAX'.

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Constant Field Values

MEMBER

static final java.lang.String MEMBER

The constant for 'MEMBER'.

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Constant Field Values

MEMBER_OF

static final java.lang.String MEMBER_OF

The constant for 'MEMBER OF'.

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Constant Field Values

MIN

static final java.lang.String MIN

The constant for 'MIN'.

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Constant Field Values

MINUS

static final java.lang.String MINUS

The constant for the minus sign '-'.

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Constant Field Values

MOD

static final java.lang.String MOD

The constant for 'MOD'.

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Constant Field Values

MULTIPLICATION

static final java.lang.String MULTIPLICATION

The constant for multiplication sign '*'.

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Constant Field Values

NAMED_PARAMETER

static final java.lang.String NAMED_PARAMETER

The constant for ':'.

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Constant Field Values

NEW

static final java.lang.String NEW

The constant for 'NEW'.

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Constant Field Values

NOT

static final java.lang.String NOT

The constant for 'NOT'.

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Constant Field Values

NOT_BETWEEN

static final java.lang.String NOT_BETWEEN

The constant for 'NOT BETWEEN'.

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Constant Field Values

NOT_EXISTS

static final java.lang.String NOT_EXISTS

The constant for 'NOT EXISTS'.

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Constant Field Values

NOT_IN

static final java.lang.String NOT_IN

The constant for 'NOT IN'.

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Constant Field Values

NOT_LIKE

static final java.lang.String NOT_LIKE

The constant for 'NOT LIKE'.

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Constant Field Values

NOT_MEMBER

static final java.lang.String NOT_MEMBER

The constant for 'NOT MEMBER'.

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Constant Field Values

NOT_MEMBER_OF

static final java.lang.String NOT_MEMBER_OF

The constant for 'NOT MEMBER OF'.

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Constant Field Values

NULL

static final java.lang.String NULL

The constant for 'NULL'.

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Constant Field Values

NULLIF

static final java.lang.String NULLIF

The constant for 'NULLIF'.

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Constant Field Values

OBJECT

static final java.lang.String OBJECT

The constant for 'OBJECT'.

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Constant Field Values

OF

static final java.lang.String OF

The constant for 'OF'.

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Constant Field Values

OR

static final java.lang.String OR

The constant for 'OR'.

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Constant Field Values

ORDER_BY

static final java.lang.String ORDER_BY

The constant for 'ORDER BY'.

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Constant Field Values

OUTER

static final java.lang.String OUTER

The constant for 'OUTER'.

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Constant Field Values

PLUS

static final java.lang.String PLUS

The constant for for the plus sign '+'.

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Constant Field Values

POSITION

static final java.lang.String POSITION

The constant for 'POSITION', which is an unused keyword.

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Constant Field Values

POSITIONAL_PARAMETER

static final java.lang.String POSITIONAL_PARAMETER

The constant for '?'.

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Constant Field Values

QUOTE

static final java.lang.String QUOTE

The constant for single quote.

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Constant Field Values

SELECT

static final java.lang.String SELECT

The constant for 'SELECT'.

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Constant Field Values

SET

static final java.lang.String SET

The constant for 'SET'.

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Constant Field Values

SIZE

static final java.lang.String SIZE

The constant for 'SIZE'.

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Constant Field Values

SOME

static final java.lang.String SOME

The constant for 'SOME'.

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Constant Field Values

SQRT

static final java.lang.String SQRT

The constant for 'SQRT'.

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Constant Field Values

SUBSTRING

static final java.lang.String SUBSTRING

The constant for 'SUBSTRING'.

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Constant Field Values

SUM

static final java.lang.String SUM

The constant for 'SUM'.

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Constant Field Values

THEN

static final java.lang.String THEN

The constant for 'THEN'.

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Constant Field Values

TRAILING

static final java.lang.String TRAILING

The constant for 'TRAILING'.

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Constant Field Values

TREAT

static final java.lang.String TREAT

The constant for 'TREAT'.

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Constant Field Values

TRIM

static final java.lang.String TRIM

The constant for 'TRIM'.

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Constant Field Values

TRUE

static final java.lang.String TRUE

The constant for 'TRUE'.

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Constant Field Values

TYPE

static final java.lang.String TYPE

The constant for 'TYPE'.

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Constant Field Values

UNKNOWN

static final java.lang.String UNKNOWN

The constant for 'UNKNOWN', which is an unused keyword.

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Constant Field Values

UPDATE

static final java.lang.String UPDATE

The constant for 'UPDATE'.

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Constant Field Values

UPPER

static final java.lang.String UPPER

The constant for 'UPPER'.

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Constant Field Values

VALUE

static final java.lang.String VALUE

The constant for 'VALUE'.

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Constant Field Values

WHEN

static final java.lang.String WHEN

The constant for the identifier 'WHEN'.

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Constant Field Values

WHERE

static final java.lang.String WHERE

The constant for 'WHERE'.

See Also:

Constant Field Values

Method Detail

accept

void accept(ExpressionVisitor visitor)

Visits this Expression by the given visitor.

Parameters:

visitor - The visitor to visit this object

acceptChildren

void acceptChildren(ExpressionVisitor visitor)

Visits the children of this Expression. This method can be used to optimize traversing the children since a new list is not created every time children() or getChildren() is called.

This does not traverse the Expression sub-hierarchy, use an subclass of AbstractTraverseChildrenVisitor in order to traverse the entire sub-hierarchy.

Parameters:

visitor - The visitor to visit the children of this object.

children

java.util.ListIterator<Expression> children()

Returns the children of this Expression.

Returns:

The children of this Expression or an empty list if this Expression does not have children

getChildren

Expression[] getChildren()

Returns the children of this Expression.

Returns:

The children of this Expression or an empty list if this Expression does not have children

getParent

Expression getParent()

Returns the parent of this Expression.

Returns:

The parent of this {@link Expression, which is never null except for the root of the tree

getRoot

JPQLExpression getRoot()

Retrieves the root node of the parsed tree hierarchy.

Returns:

The root of the Expression tree

isAncestor

boolean isAncestor(Expression expression)

Determines whether this Expression is a parent of the given Expression.

Parameters:

expression - The Expression to verify its paternity with this Expression

Returns:

true if this Expression is the same as the given Expression or one of its parent; false otherwise

toActualText

java.lang.String toActualText()

Generates a string representation of this Expression, which needs to include any characters that are considered virtual, i.e. that was parsed when the query is incomplete and is needed for functionality like content assist.

Returns:

The string representation of this Expression

toParsedText

java.lang.String toParsedText()

Returns a string representation of this Expression and its children. The expression should contain whitespace even if the beautified version would not have any. For instance, "SELECT e " should be returned where Expression#toText() would return "SELECT e".

Returns:

The string representation of this Expression

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