Package org.datanucleus.store.rdbms.sql.expression

Class BinaryExpression

java.lang.Object

org.datanucleus.store.rdbms.sql.expression.SQLExpression

org.datanucleus.store.rdbms.sql.expression.BinaryExpression

Direct Known Subclasses:

BinaryLiteral

public class BinaryExpression
extends SQLExpression

Representation of a Binary expression in a Query.

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

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

Constructor Summary

Constructors

Constructor	Description
BinaryExpression(SQLStatement stmt, JavaTypeMapping mapping, String functionName, List<SQLExpression> args, List types)
BinaryExpression(SQLStatement stmt, SQLTable table, JavaTypeMapping mapping)	Constructor for an SQL expression for a (field) mapping in a specified table.

Method Summary

Modifier and Type	Method	Description
BooleanExpression	eq(SQLExpression expr)	Equality operator (equals to)
BooleanExpression	gt(SQLExpression expr)	Relational operator (greater than)
BooleanExpression	gteq(SQLExpression expr)
BooleanExpression	in(SQLExpression expr, boolean not)	In expression.
BooleanExpression	lt(SQLExpression expr)	Relational operator (lower than)
BooleanExpression	lteq(SQLExpression expr)
BooleanExpression	noteq(SQLExpression expr)

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

add, and, bitAnd, bitOr, cast, com, distinct, div, encloseInParentheses, eor, ge, getJavaTypeMapping, getLowestOperator, getNumberOfSubExpressions, getParameterName, getSQLStatement, getSQLTable, getSubExpression, invoke, ior, is, isParameter, le, mod, mul, ne, neg, not, setJavaTypeMapping, sub, toSQLText, unDistinct

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryExpression

public BinaryExpression(SQLStatement stmt,
                        SQLTable table,
                        JavaTypeMapping mapping)

Constructor for an SQL expression for a (field) mapping in a specified table.

Parameters:

stmt - The statement

table - The table in the statement

mapping - The mapping for the field

BinaryExpression

public BinaryExpression(SQLStatement stmt,
                        JavaTypeMapping mapping,
                        String functionName,
                        List<SQLExpression> args,
                        List types)

Parameters:

stmt - SQL statement

mapping - The mapping

functionName - Function to invoke

args - Function args

types - Function arg types

Method Detail

eq

public BooleanExpression eq(SQLExpression expr)

Description copied from class: SQLExpression

Equality operator (equals to)

Overrides:

eq in class SQLExpression

Parameters:

expr - the right-hand operand

Returns:

The type of an equality expression is a boolean

noteq

public BooleanExpression noteq(SQLExpression expr)

lt

public BooleanExpression lt(SQLExpression expr)

Description copied from class: SQLExpression

Relational operator (lower than)

Overrides:

lt in class SQLExpression

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.

lteq

public BooleanExpression lteq(SQLExpression expr)

gt

public BooleanExpression gt(SQLExpression expr)

Description copied from class: SQLExpression

Relational operator (greater than)

Overrides:

gt in class SQLExpression

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.

gteq

public BooleanExpression gteq(SQLExpression expr)

in

public BooleanExpression in(SQLExpression expr,
                            boolean not)

Description copied from class: SQLExpression

In expression. Return true if this is contained by expr

Overrides:

in in class SQLExpression

Parameters:

expr - the right-hand expression

not - Whether we really want "not in"

Returns:

true if the left-hand expression is contained by the right-hand expression. Otherwise the result is false.