Uses of Interface
org.apache.openjpa.persistence.query.Expression

Packages that use Expression

Package	Description
org.apache.openjpa.persistence.query	OpenJPA Dynamic Query This package provides dynamic query construction that are similar to weakly-typed Criteria API.

Uses of Expression in org.apache.openjpa.persistence.query

Subinterfaces of Expression in org.apache.openjpa.persistence.query

Modifier and Type	Interface and Description
interface	Aggregate Type of the result of an aggregate operation
interface	DomainObject Domain objects define the domain over which a query operates.
interface	PathExpression Interface for operations over objects reached via paths

Classes in org.apache.openjpa.persistence.query that implement Expression

Modifier and Type	Class and Description
class	AbsExpression Denotes ABS() operation on a given expression.
class	AbstractDomainObject Domain Object is a path expression over which query is evaluated.
class	ArrayExpression A single expression that holds an array of values.
class	AverageExpression Denotes AVG() on a given Expression.
class	BinaryOperatorExpression An expression resulting from a binary operation on two expressions.
class	ConcatExpression Denotes CONCAT(e1,e2,..)
class	CountExpression Denotes COUNT(e) Expression.
class	CurrentTimeExpression Denotes CURRENT_TIME(), CURRENT_DATE() and CURRENT_TIMESTAMP() expressions.
class	DistinctExpression Denotes DISTINCT(e) Expression.
class	DividedByExpression Denotes e1/e2 Expression.
class	ElseExpression Else clause in a Case Statement.
class	EntryExpression Denotes ENTRY(e) on a path.
class	FetchPath Denotes a path used in fetch join.
class	IndexExpression Denotes INDEX(e) Expression.
class	JoinPath Path resulting by joining from a parent path via an attribute.
class	KeyExpression Denotes KEY(e) Expression.
class	LengthExpression Denotes LENGTH(e) Expression.
class	LiteralExpression Denotes a Literal Expression.
class	LocateExpression Denotes LOCATE(e1, e2, n) Expression.
class	LowerExpression Denotes LOWER(e) Expression.
class	MaxExpression Denotes MAX(e) Expression.
class	MinExpression Denotes MIN(e) Expression.
class	MinusExpression Denotes (e1 - e2) Expression.
class	OperatorPath A path resulting from KEY() or VALUE() operation on an existing path.
class	ParameterExpression Denotes a parameter in a query.
class	PlusExpression Denotes (e1 + e2) Expression.
class	QueryDefinitionImpl Implements QueryDefinition.
class	RangeExpression Denotes a range used by e1 BETWEEN x AND y operation.
class	RootPath Denotes root domain instance representing a persistent type.
class	SizeExpression Denotes SIZE(e) Expression.
class	SquareRootExpression Denotes SQRT(e) Expression.
class	SubStringExpression Denotes SUBSTR(a,i1,i2) Expression.
class	SumExpression Denotes SUM(e) Expression.
class	TimesExpression Denotes (e1*e2) Expression.
class	TrimExpression Denotes TRIM(e1,x) Expression.
class	TypeExpression Denotes TYPE(e) Expression.
class	UnaryMinusExpression Denotes (-e) Expression.
class	UpperExpression Denotes UPPER(e) Expression.
class	ValueExpression Denotes VALUE(e) Expression.
class	VarArgsExpression A expression that holds an array of Expressions.

Fields in org.apache.openjpa.persistence.query declared as Expression

Modifier and Type	Field and Description
protected Expression	BinaryOperatorExpression._e1
protected Expression	BinaryOperatorExpression._e2

Methods in org.apache.openjpa.persistence.query that return Expression

Modifier and Type	Method and Description
Expression	Expression.abs() Absolute value.
Expression	AbstractDomainObject.coalesce(Calendar... exp)
Expression	QueryDefinitionImpl.coalesce(Calendar... exp)
Expression	QueryDefinition.coalesce(Calendar... exp) coalesce This is equivalent to a case expression that returns null if all its arguments evaluate to null, and the value of its first non-null argument otherwise.
Expression	AbstractDomainObject.coalesce(Date... exp)
Expression	QueryDefinitionImpl.coalesce(Date... exp)
Expression	QueryDefinition.coalesce(Date... exp) coalesce This is equivalent to a case expression that returns null if all its arguments evaluate to null, and the value of its first non-null argument otherwise.
Expression	AbstractDomainObject.coalesce(Expression... exp)
Expression	QueryDefinitionImpl.coalesce(Expression... exp)
Expression	QueryDefinition.coalesce(Expression... exp) coalesce This is equivalent to a case expression that returns null if all its arguments evaluate to null, and the value of its first non-null argument otherwise.
Expression	AbstractDomainObject.coalesce(String... exp)
Expression	QueryDefinitionImpl.coalesce(String... exp)
Expression	QueryDefinition.coalesce(String... exp) coalesce This is equivalent to a case expression that returns null if all its arguments evaluate to null, and the value of its first non-null argument otherwise.
Expression	Expression.concat(Expression... str) Concatenate a string with other string(s).
Expression	Expression.concat(String... str) Concatenate a string with other string(s).
Expression	AbstractDomainObject.currentDate()
Expression	QueryDefinitionImpl.currentDate()
Expression	QueryDefinition.currentDate() Create an Expression corresponding to the current date on the database server at the time of query execution.
Expression	AbstractDomainObject.currentTime()
Expression	QueryDefinitionImpl.currentTime()
Expression	QueryDefinition.currentTime() Create an Expression corresponding to the current time on the database server at the time of query execution.
Expression	AbstractDomainObject.currentTimestamp()
Expression	QueryDefinitionImpl.currentTimestamp()
Expression	QueryDefinition.currentTimestamp() Create an Expression corresponding to the current timestamp on the database server at the time of query execution.
Expression	Aggregate.distinct() Specify that duplicates are to be removed before the aggregate operation is invoked.
Expression	Expression.dividedBy(Expression expr) Division.
Expression	Expression.dividedBy(Number num) Division.
Expression	CaseExpressionImpl.elseCase(Calendar arg)
Expression	CaseExpression.elseCase(Calendar arg) Add else to a case expression.
Expression	CaseExpressionImpl.elseCase(Class arg)
Expression	CaseExpression.elseCase(Class arg) Add else to a case expression.
Expression	CaseExpressionImpl.elseCase(Date arg)
Expression	CaseExpression.elseCase(Date arg) Add else to a case expression.
Expression	CaseExpressionImpl.elseCase(Enum<?> arg)
Expression	CaseExpression.elseCase(Enum<?> arg) Add else to a case expression.
Expression	CaseExpressionImpl.elseCase(Expression arg)
Expression	CaseExpression.elseCase(Expression arg) Add else to a case expression.
Expression	CaseExpressionImpl.elseCase(Number arg)
Expression	CaseExpression.elseCase(Number arg) Add else to a case expression.
Expression	CaseExpressionImpl.elseCase(String arg)
Expression	CaseExpression.elseCase(String arg) Add else to a case expression.
Expression	BinaryOperatorExpression.getOperand1()
Expression	BinaryOperatorExpression.getOperand2()
Expression	AbstractDomainObject.index() Derives by INDEX() operation on this path.
Expression	DomainObject.index() Return an expression that corresponds to the index. of the domain object in the referenced association or element collection.
Expression	Expression.length() String length This method must be invoked on an expression corresponding to a string.
Expression	AbstractDomainObject.literal(boolean b)
Expression	QueryDefinitionImpl.literal(boolean b)
Expression	QueryDefinition.literal(boolean b) Create an Expression corresponding to a boolean value.
Expression	AbstractDomainObject.literal(Calendar c)
Expression	QueryDefinitionImpl.literal(Calendar c)
Expression	QueryDefinition.literal(Calendar c) Create an Expression corresponding to a Calendar value.
Expression	AbstractDomainObject.literal(char c)
Expression	QueryDefinitionImpl.literal(char c)
Expression	QueryDefinition.literal(char c) Create an Expression corresponding to a character value.
Expression	AbstractDomainObject.literal(Class cls)
Expression	QueryDefinitionImpl.literal(Class cls)
Expression	QueryDefinition.literal(Class cls) Create an Expression corresponding to an entity class.
Expression	AbstractDomainObject.literal(Date d)
Expression	QueryDefinitionImpl.literal(Date d)
Expression	QueryDefinition.literal(Date d) Create an Expression corresponding to a Date value.
Expression	AbstractDomainObject.literal(Enum<?> e)
Expression	QueryDefinitionImpl.literal(Enum<?> e)
Expression	QueryDefinition.literal(Enum<?> e) Create an Expression corresponding to an enum.
Expression	AbstractDomainObject.literal(Number n)
Expression	QueryDefinitionImpl.literal(Number n)
Expression	QueryDefinition.literal(Number n) Create an Expression corresponding to a numeric value.
Expression	AbstractDomainObject.literal(String s)
Expression	QueryDefinitionImpl.literal(String s)
Expression	QueryDefinition.literal(String s) Create an Expression corresponding to a String value.
Expression	Expression.locate(Expression str) Locate a string contained within the string corresponding to the expression on which the method was invoked.
Expression	Expression.locate(Expression str, Expression position) Locate a string contained within the string corresponding to the expression on which the method was invoked, starting at a specified search position.
Expression	Expression.locate(Expression str, int position) Locate a string contained within the string corresponding to the expression on which the method was invoked, starting at a specified search position.
Expression	Expression.locate(String str) Locate a string contained within the string corresponding to the expression on which the method was invoked.
Expression	Expression.locate(String str, Expression position) Locate a string contained within the string corresponding to the expression on which the method was invoked, starting at a specified search position.
Expression	Expression.locate(String str, int position) Locate a string contained within the string corresponding to the expression on which the method was invoked, starting at a specified search position.
Expression	Expression.lower() Convert string to lowercase.
Expression	Expression.minus() Unary minus.
Expression	Expression.minus(Expression expr) Subtraction.
Expression	Expression.minus(Number num) Subtraction.
Expression	Expression.mod(Expression expr) Modulo operation.
Expression	Expression.mod(int num) Modulo operation.
Expression	AbstractDomainObject.nullif(Calendar arg1, Calendar arg2)
Expression	QueryDefinitionImpl.nullif(Calendar arg1, Calendar arg2)
Expression	QueryDefinition.nullif(Calendar arg1, Calendar arg2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	AbstractDomainObject.nullif(Class arg1, Class arg2)
Expression	QueryDefinitionImpl.nullif(Class arg1, Class arg2)
Expression	QueryDefinition.nullif(Class arg1, Class arg2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	AbstractDomainObject.nullif(Date arg1, Date arg2)
Expression	QueryDefinitionImpl.nullif(Date arg1, Date arg2)
Expression	QueryDefinition.nullif(Date arg1, Date arg2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	AbstractDomainObject.nullif(Enum<?> arg1, Enum<?> arg2)
Expression	QueryDefinitionImpl.nullif(Enum<?> arg1, Enum<?> arg2)
Expression	QueryDefinition.nullif(Enum<?> arg1, Enum<?> arg2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	AbstractDomainObject.nullif(Expression exp1, Expression exp2)
Expression	QueryDefinitionImpl.nullif(Expression exp1, Expression exp2)
Expression	QueryDefinition.nullif(Expression exp1, Expression exp2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	AbstractDomainObject.nullif(Number arg1, Number arg2)
Expression	QueryDefinitionImpl.nullif(Number arg1, Number arg2)
Expression	QueryDefinition.nullif(Number arg1, Number arg2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	AbstractDomainObject.nullif(String arg1, String arg2)
Expression	QueryDefinitionImpl.nullif(String arg1, String arg2)
Expression	QueryDefinition.nullif(String arg1, String arg2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	AbstractDomainObject.nullLiteral()
Expression	QueryDefinitionImpl.nullLiteral()
Expression	QueryDefinition.nullLiteral() Create an Expression corresponding to a null value.
Expression	AbstractDomainObject.param(String name)
Expression	QueryDefinitionImpl.param(String name)
Expression	QueryDefinition.param(String name) Specify use of a parameter of the given name.
Expression	Expression.plus(Expression expr) Addition.
Expression	Expression.plus(Number num) Addition.
Expression	PathExpression.size() Return an expression that corresponds to the number of elements association or element collection corresponding to the path expression.
Expression	Expression.sqrt() Square root.
Expression	Expression.substring(Expression start) Extract a substring starting at specified position through to the end of the string.
Expression	Expression.substring(Expression start, Expression len) Extract a substring.
Expression	Expression.substring(Expression start, int len) Extract a substring.
Expression	Expression.substring(int start) Extract a substring starting at specified position through to the end of the string.
Expression	Expression.substring(int start, Expression len) Extract a substring.
Expression	Expression.substring(int start, int len) Extract a substring.
Expression	Expression.times(Expression expr) Multiplication.
Expression	Expression.times(Number num) Multiplication.
Expression	Expression.trim() Trim leading and trailing blanks.
Expression	Expression.trim(char c) Trim leading and trailing occurrences of character from the string.
Expression	Expression.trim(char c, TrimSpec spec) Trim occurrences of the character from leading or trailing (or both) positions of the string, as specified by trim spec.
Expression	Expression.trim(Expression expr) Trim leading and trailing occurrences of character specified by the expression argument from the string.
Expression	Expression.trim(Expression expr, TrimSpec spec) Trim occurrences of the character specified by the expression argument from leading or trailing (or both) positions of the string, as specified by trim spec.
Expression	Expression.trim(TrimSpec spec) Trim leading, trailing blanks (or both) as specified by trim spec.
Expression	PathExpression.type() Return an expression that corresponds to the type of the entity.
Expression	Expression.upper() Convert string to uppercase.

Methods in org.apache.openjpa.persistence.query with parameters of type Expression

Modifier and Type	Method and Description
Expression	AbstractDomainObject.coalesce(Expression... exp)
Expression	QueryDefinitionImpl.coalesce(Expression... exp)
Expression	QueryDefinition.coalesce(Expression... exp) coalesce This is equivalent to a case expression that returns null if all its arguments evaluate to null, and the value of its first non-null argument otherwise.
Expression	Expression.concat(Expression... str) Concatenate a string with other string(s).
Expression	Expression.dividedBy(Expression expr) Division.
Expression	CaseExpressionImpl.elseCase(Expression arg)
Expression	CaseExpression.elseCase(Expression arg) Add else to a case expression.
Predicate	Expression.in(Expression... params) Create a predicate for testing whether the expression value is a member of the argument list.
Expression	Expression.locate(Expression str) Locate a string contained within the string corresponding to the expression on which the method was invoked.
Expression	Expression.locate(Expression str, Expression position) Locate a string contained within the string corresponding to the expression on which the method was invoked, starting at a specified search position.
Expression	Expression.locate(Expression str, int position) Locate a string contained within the string corresponding to the expression on which the method was invoked, starting at a specified search position.
Expression	Expression.locate(String str, Expression position) Locate a string contained within the string corresponding to the expression on which the method was invoked, starting at a specified search position.
Expression	Expression.minus(Expression expr) Subtraction.
Expression	Expression.mod(Expression expr) Modulo operation.
Expression	AbstractDomainObject.nullif(Expression exp1, Expression exp2)
Expression	QueryDefinitionImpl.nullif(Expression exp1, Expression exp2)
Expression	QueryDefinition.nullif(Expression exp1, Expression exp2) nullif This is equivalent to a case expression that tests whether its arguments are equal, returning null if they are and the value of the first expression if they are not.
Expression	Expression.plus(Expression expr) Addition.
CaseExpression	AbstractDomainObject.simpleCase(Expression caseOperand)
CaseExpression	QueryDefinitionImpl.simpleCase(Expression caseOperand)
CaseExpression	QueryDefinition.simpleCase(Expression caseOperand) Create a simple case expression with the given case operand.
Expression	Expression.substring(Expression start) Extract a substring starting at specified position through to the end of the string.
Expression	Expression.substring(Expression start, Expression len) Extract a substring.
Expression	Expression.substring(Expression start, int len) Extract a substring.
Expression	Expression.substring(int start, Expression len) Extract a substring.
CaseExpression	CaseExpressionImpl.then(Expression then)
CaseExpression	CaseExpression.then(Expression then) Add a then clause to a general or simple case expression.
Expression	Expression.times(Expression expr) Multiplication.
Expression	Expression.trim(Expression expr) Trim leading and trailing occurrences of character specified by the expression argument from the string.
Expression	Expression.trim(Expression expr, TrimSpec spec) Trim occurrences of the character specified by the expression argument from leading or trailing (or both) positions of the string, as specified by trim spec.
CaseExpression	CaseExpressionImpl.when(Expression when)
CaseExpression	CaseExpression.when(Expression when) Add a when clause to a simple case expression.

Constructors in org.apache.openjpa.persistence.query with parameters of type Expression

Constructor and Description
BetweenExpression(Expression arg1, RangeExpression arg2)
BinaryOperatorExpression(Expression e1, BinaryFunctionalOperator op, Expression e2)
CountExpression(Expression op)
DistinctExpression(Expression expr)
DividedByExpression(Expression op1, Expression op2)
ElseExpression(CaseExpressionImpl owner, Expression op)
EqualExpression(Expression op1, Expression op2)
GreaterEqualExpression(Expression op1, Expression op2)
GreaterThanExpression(Expression op1, Expression op2)
IndexExpression(Expression op)
InExpression(Expression op, ArrayExpression op2)
InExpression(Expression op, Expression subquery)
IsEmptyExpression(Expression op)
IsNullExpression(Expression op)
LengthExpression(Expression op)
LessEqualExpression(Expression op1, Expression op2)
LessThanExpression(Expression op1, Expression op2)
LikeExpression(Expression e, Expression pattern)
LikeExpression(Expression e, Expression pattern, Object echar)
LocateExpression(Expression key, Expression str, Expression start)
LocateExpression(Expression key, Expression str, int start)
LocateExpression(Expression key, String str, Expression start)
LocateExpression(Expression key, String str, int start)
LowerExpression(Expression op)
MaxExpression(Expression op)
MemberOfExpression(Expression op, Expression op2)
MinExpression(Expression op)
MinusExpression(Expression op, Expression op2)
NotEqualExpression(Expression op1, Expression op2)
PlusExpression(Expression op, Expression op2)
RangeExpression(Expression e1, Expression e2)
SizeExpression(Expression op)
SquareRootExpression(Expression op)
SubStringExpression(Expression op, Expression start)
SubStringExpression(Expression op, Expression start, Expression l)
SubStringExpression(Expression op, int start)
SubStringExpression(Expression op, int start, int len)
SumExpression(Expression op)
TimesExpression(Expression op1, Expression op2)
TrimExpression(Expression op, char ch, TrimSpec spec)
TrimExpression(Expression op, Expression ch, TrimSpec spec)
TypeExpression(Expression op)
UnaryMinusExpression(Expression expr)
UpperExpression(Expression op)
VarArgsExpression(Expression[] values)