org.datanucleus.store.rdbms.sql.expression
Class TemporalSubqueryExpression

java.lang.Object
  org.datanucleus.store.rdbms.sql.expression.SQLExpression
      org.datanucleus.store.rdbms.sql.expression.TemporalExpression
          org.datanucleus.store.rdbms.sql.expression.TemporalSubqueryExpression

All Implemented Interfaces:

SubqueryExpressionComponent

public class TemporalSubqueryExpression
extends TemporalExpression
implements SubqueryExpressionComponent

Temporal expression to wrap a subquery. The subquery SQLStatement should return a temporal value. This is possible with a subquery like MAX(date), MIN(date).

Nested Class Summary

Nested classes/interfaces inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression

SQLExpression.ColumnExpressionList

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression

LOCALISER, lowestOperator, mapping, parameterName, st, stmt, subExprs, table

Constructor Summary

TemporalSubqueryExpression(SQLStatement stmt, SQLStatement subStmt)

Method Summary

BooleanExpression	eq(SQLExpression expr) Equality operator (equals to)
BooleanExpression	ge(SQLExpression expr) Relational operator (greater than or equals)
SQLStatement	getSubqueryStatement() Accessor for the subquery.
BooleanExpression	gt(SQLExpression expr) Relational operator (greater than)
SQLExpression	invoke(String methodName, List args) Invocation of a method on this expression.
BooleanExpression	le(SQLExpression expr) Relational operator (lower than or equals)
BooleanExpression	lt(SQLExpression expr) Relational operator (lower than)
BooleanExpression	ne(SQLExpression expr) Not equality operator (not equals to)

Methods inherited from class org.datanucleus.store.rdbms.sql.expression.TemporalExpression

in

Methods inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression

add, and, cast, com, distinct, div, encloseInParentheses, eor, getJavaTypeMapping, getLowestOperator, getNumberOfSubExpressions, getParameterName, getSQLStatement, getSQLTable, getSubExpression, ior, is, isParameter, mod, mul, neg, not, setJavaTypeMapping, sub, toSQLText

Methods inherited from class java.lang.Object

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

Constructor Detail

TemporalSubqueryExpression

public TemporalSubqueryExpression(SQLStatement stmt,
                                  SQLStatement subStmt)

Method Detail

getSubqueryStatement

public SQLStatement getSubqueryStatement()

Description copied from interface: SubqueryExpressionComponent

Accessor for the subquery.

Specified by:

getSubqueryStatement in interface SubqueryExpressionComponent

Returns:

The subquery statement

eq

public BooleanExpression eq(SQLExpression expr)

Description copied from class: SQLExpression

Equality operator (equals to)

Overrides:

eq in class TemporalExpression

Parameters:

expr - the right-hand operand

Returns:

The type of an equality expression is a boolean

ne

public BooleanExpression ne(SQLExpression expr)

Description copied from class: SQLExpression

Not equality operator (not equals to)

Overrides:

ne in class TemporalExpression

Parameters:

expr - the right-hand operand

Returns:

The type of an equality expression is a boolean

lt

public BooleanExpression lt(SQLExpression expr)

Description copied from class: SQLExpression

Relational operator (lower than)

Overrides:

lt in class TemporalExpression

Parameters:

expr - the right-hand operand

Returns:

true if the value of the left-hand operand is less than the value of the right-hand operand, and otherwise is false.

le

public BooleanExpression le(SQLExpression expr)

Description copied from class: SQLExpression

Relational operator (lower than or equals)

Overrides:

le in class TemporalExpression

Parameters:

expr - the right-hand operand

Returns:

true if the value of the left-hand operand is less than or equal to the value of the right-hand operand, and otherwise is false.

gt

public BooleanExpression gt(SQLExpression expr)

Description copied from class: SQLExpression

Relational operator (greater than)

Overrides:

gt in class TemporalExpression

Parameters:

expr - the right-hand operand

Returns:

true if the value of the left-hand operand is greater than the value of the right-hand operand, and otherwise is false.

ge

public BooleanExpression ge(SQLExpression expr)

Description copied from class: SQLExpression

Relational operator (greater than or equals)

Overrides:

ge in class TemporalExpression

Parameters:

expr - the right-hand operand

Returns:

true if the value of the left-hand operand is greater than or equal the value of the right-hand operand, and otherwise is false.

invoke

public SQLExpression invoke(String methodName,
                            List args)

Description copied from class: SQLExpression

Invocation of a method on this expression.

Overrides:

invoke in class TemporalExpression

Parameters:

methodName - name of the method to invoke

args - Args to this method (if any)

Returns:

the converted value