Package org.apache.openjpa.kernel.exps

OpenJPA Expression Tree

See:
Description

Interface Summary

AggregateListener	An aggregate listener aggregates data produced by an ExpressionQuery.
Arguments	Multiple arguments to a function call.
Constant	Interface for any query constant value.
Expression	Interface for a set of conditions that must be met for the query to be true.
ExpressionFactory	The ExpressionFactory must be implemented by a particular runtime to form Expressions in its native query language.
ExpressionParser	Parser for query languages that will be used by a ExpressionQuery.
ExpressionVisitor	Visits nodes of a query expression tree.
FilterListener	A filter listener extends expression filters with custom functionality.
Literal	Interface for any literal value.
Parameter	A query parameter.
Path	A path represents a traversal into fields of a candidate object.
Resolver	A Resolver is used to resolve listeners and class or entity names that appear in a query.
Subquery	Query value representing a subquery.
Value	Interface for any non-operator in a query filter, including constants, variables, and object fields.

Class Summary

Abs	Take the absolute value of a number.
AbstractExpressionBuilder	Abstract base class to help build expressions.
AbstractExpressionVisitor	No-op abstract visitor meant for easy extension.
Add	Value produced by two values being added together.
Aggregate	A value produced from evaluating a result aggregate.
AggregateVal	An aggregate of some value.
All	In-memory All implementation.
AndExpression	An expression that AND's two others together.
Any	In-memory Any implementation.
Args	A list of arguments to a multi-argument function.
Avg	Average values.
BindKeyVariableExpression	BindVariableExpression for map key sets.
BindValueVariableExpression	BindVariableExpression for map value collections.
BindVariableAndExpression	Any contains(var) expression must be followed by at least one AND clause using the variable 'var'.
BindVariableExpression	Binds a variable to a collection.
BoundVariable	Represents a bound variable.
CandidatePath	A path represents a traversal into fields of a candidate object.
CandidatePath.Traversal	Represents a traversal through a field.
Cast	Represents a cast.
Coalesce	An in-memory representation of a coalesce expression
CollectionParam	Represents a collection valued input parameter.
CompareExpression	Expression that compares two others.
Concat	Concatenate two strings together.
ContainsExpression	Tests that a Collection contains a value.
ContainsKeyExpression	Tests that a Map key set contains a value.
ContainsValueExpression	Tests that a Map value collection contains a value.
Context	JPQL / Criteria Query Context
Count	Count non-null values.
CurrentDate	Represents the current date.
Distinct	A distinct set of the specified values.
Divide	Value produced by one value being divided by another.
EndsWithExpression	Expression that compares two others.
EqualExpression	Expression that compares two others.
Exp	An in-memory representation of an Expression.
Extension	A value produced from evaluating a custom extension.
GeneralCase	An in-memory representation of a general case expression
GetMapValue	Returns the value of the specified key in a Map.
GetObjectId	Get the oid of an object.
GreaterThanEqualExpression	Expression that compares two others.
GreaterThanExpression	Expression that compares two others.
Index	Returns the index of a value within a collection/map.
IndexOf	Find the index of one string within another.
InMemoryExpressionFactory	Expression factory implementation that can be used to execute queries in memory.
InstanceofExpression	Tests whether a value is an instance of a class.
IsEmptyExpression	Expression to test for an empty Collection.
LessThanEqualExpression	Expression that compares two others.
LessThanExpression	Expression that compares two others.
Lit	Represents a literal.
MatchesExpression	Expression that compares two others.
MathVal	Value produced by a mathematical operation on two values.
Max	Find the max.
Min	Find the min.
Mod	Value produced by one value being mod'd by another.
Multiply	Value produced by two values being multiplied together.
NotEqualExpression	Expression that compares two others.
NotExpression	An expression that NOT's another.
Null	Represents the null constant.
NullIf	An in-memory representation of a nullif expression
OrExpression	An expression that OR's two others together.
Param	Represents a parameter.
QueryExpressions	Struct to hold the state of a parsed expression query.
SimpleCase	An in-memory representation of a simple case expression
Size	Returns the count of a collection.
Sqrt	Take the square root of a number.
StartsWithExpression	Expression that compares two others.
StringContains	Deprecated. Use matches() instead.
StringLength	Returns the number of characters in the String.
SubQ	An in-memory representation of a Subquery.
Substring	Take the substring of a string.
Subtract	Value produced by one value being subtracted from another.
Sum	Sum values.
This	Represents the 'this' ptr in a filter.
ToLowerCase	Lower-case a string.
ToUpperCase	Upper-case a string.
Trim	Trims leading, trailing, or both charactes from a String.
Type	Returns the entity type.
TypeLit	Represents a type literal.
UnaryMathVal	Value produced by a mathematical operation on one value.
UnboundVariable	Represents an unbound variable.
Val	An in-memory representation of a Value.
ValExpression	Boolean value used as an expression.
ValuePath	Represents a path that begins with a variable or parameter.
WhenCondition
WhenScalar
WildcardMatch	Deprecated. Use matches() instead.

Package org.apache.openjpa.kernel.exps Description

OpenJPA Expression Tree