Package org.apache.openjpa.jdbc.kernel.exps

OpenJPA-JDBC Expression Tree

See:
Description

Interface Summary

Exp	An Expression represents a query ready for execution.
FilterValue	The simplified public view of any non-operator in a query filter, including constants, variables, and object fields.
JDBCAggregateListener	JDBC extension to the AggregateListener.
JDBCFilterListener	JDBC extension to the FilterListener.
JDBCPath	A path represents a traversal into fields of a candidate object.
Val	A Value represents any non-operator in a query filter, including constants, variables, and object fields.

Class Summary

Abs	Absolute value.
AbstractVal	Abstract value for easy extension.
Aggregate	Aggregate listener that evaluates to a value.
All	All.
AndExpression	Combines two expressions.
Any	Any.
Args	A list of arguments to a multi-argument function.
Avg	Average.
BinaryOpExpState	Expression tree state for a binary operator.
BindVariableAndExpression	Combines a bind variable expression with another.
BindVariableExpression	Binds a variable to a value.
CoalesceExpression	Coalesce expression.
CollectionParam	A collection-valued input parameter in an in-expression.
CollectionParam.ParamExpState	Expression state.
CompareEqualExpression	Compares two values for equality.
CompareExpression	Compares two values.
Concat	Concatenate one string with another.
Const	A literal or parameter in the filter.
Const.ConstExpState	Constant expression state.
ConstGetObjectId	Obtaining the object id of a constant.
ConstInstanceofExpression	Tests whether a value is an instance of a class.
ConstPath	A field traversal starting with a constant filter parameter.
ContainsExpression	Tests whether one value contains another.
ContainsKeyExpression	Tests whether a map value contains a key.
Count	Count non-null values.
CurrentDate	A literal current DATE/TIME/TIMESTAMP value in a filter.
DatastoreFunction	A unary operator that executes a datastore specific function with zero or more arguments.
Distinct	Distinct the specified path.
EmptyExpression	An empty expression.
EndsWithExpression	Test if one string ends with another.
EqualExpression	Compares two values.
ExpContext	Expression tree context.
ExpState	Expression tree state.
Extension	Filter listener that evaluates to a value.
FilterValueImpl	Implementation of FilterValue that wraps a Val.
GeneralCaseExpression	General case expression.
GetColumn	Returns the SQL alias of the named column for use in a query.
GetMapValue	Returns the value of the given map's key.
GetObjectId	Select the oid value of an object; typically used in projections.
HasContainsExpressionVisitor	Determines whether the visited expressions include a "contains" expression.
Index	Index.
IndexOf	Find the index of one string within another.
InExpression	Tests whether a value is IN a collection.
InKeyExpression	Tests whether a value is IN a map key set.
InstanceofExpression	Tests whether the given path is an instance of the given class.
InSubQExpression	Tests whether a value is IN a subquery.
InValueExpression	Tests whether a value is IN a map value collection.
IsEmptyExpression	Tests whether the given value is empty.
IsNotEmptyExpression	Tests whether the given value is not empty.
JDBCExpressionFactory	Expression factory implementation that can be used to execute queries via SQL.
JDBCStringContains	Deprecated. Use matches() instead.
JDBCWildcardMatch	Deprecated. Use matches() instead.
Lit	A literal value in a filter.
MapEntry	Returns the Map.Entry of a map value.
MapEntry.EntryExpState	Expression state.
MapKey	Returns the key of a map value.
MapKey.KeyExpState	Expression state.
MatchesExpression	Test if a string matches a regexp.
Math	Value produced by a mathematical operation on two values.
Max	Maximum.
Min	Minimum.
NotContainsExpression	Negates a contains expression using a subselect to make sure no elements meet the criteria.
NotEqualExpression	Compares two values.
NotExpression	Negates an expression.
Null	A literal null value in a filter.
NullIfExpression	NullIf expression.
OrExpression	Combines two expressions.
Param	A parameter in a filter.
Param.ParamExpState	Expression state.
PCPath	A path represents a traversal into fields of a candidate object.
PCPath.PathExpState	Expression state.
QueryExpressionsState	Struct to hold the state of a query expressions instance.
SelectConstructor	Turns parsed queries into selects.
SimpleCaseExpression	Simple case expression.
Size	Size.
SQLEmbed	Simple listener which embeds its SQL argument into the query.
SQLExpression	Deprecated. Use SQLEmbed directly
SQLValue	Deprecated. Use SQLEmbed directly
Sqrt	Square root.
StartsWithExpression	Test if one string starts with another.
StringFunction	A JDBC string function.
StringLength	Returns the number of characters in a string.
SubQ	A subquery.
Substring	Take a substring of a string.
Sum	Sum.
ToLowerCase	Lower-cases a string.
ToUpperCase	Upper-cases a string.
Trim	Returns the number of characters in a string.
Type	Entity Type expression.
TypeLit	A type literal value.
UnaryOp	Value produced by a unary operation on a value.
Variable	A variable in a filter.
WhenCondition	Value produced by a when_clause of a case expression.
WhenScalar	Value produced by a when_clause of a case expression.

Package org.apache.openjpa.jdbc.kernel.exps Description

OpenJPA-JDBC Expression Tree