org.jpox.store.expression
Class CharacterLiteral

java.lang.Object
  org.jpox.store.expression.ScalarExpression
      org.jpox.store.expression.CharacterExpression
          org.jpox.store.expression.CharacterLiteral

All Implemented Interfaces:

Literal

public class CharacterLiteral
extends CharacterExpression
implements Literal

Representation of a Character literal in a Query.

Version:

$Revision: 1.10 $

Nested Class Summary

Nested classes/interfaces inherited from class org.jpox.store.expression.ScalarExpression

ScalarExpression.DyadicOperator, ScalarExpression.ExpressionList, ScalarExpression.FieldExpression, ScalarExpression.IllegalArgumentTypeException, ScalarExpression.IllegalOperationException, ScalarExpression.MethodInvocationException, ScalarExpression.MonadicOperator, ScalarExpression.Operator

Field Summary

Fields inherited from class org.jpox.store.expression.ScalarExpression

aliasIdentifier, expressionList, FILTER, LOCALISER, lowestOperator, mapping, OP_ADD, OP_AND, OP_BETWEEN, OP_COM, OP_CONCAT, OP_DIV, OP_EQ, OP_GT, OP_GTEQ, OP_IN, OP_IS, OP_ISNOT, OP_LIKE, OP_LT, OP_LTEQ, OP_MOD, OP_MUL, OP_NEG, OP_NOT, OP_NOTEQ, OP_OR, OP_SUB, PROJECTION, qs, st, te

Constructor Summary

CharacterLiteral(QueryExpression qs, JavaTypeMapping mapping, char value)
Creates a char literal

CharacterLiteral(QueryExpression qs, JavaTypeMapping mapping, java.lang.String value)
Creates a char literal

Method Summary

ScalarExpression	add(ScalarExpression expr) Additive Operator.
ScalarExpression	com() Bitwise Complement Operator
BooleanExpression	eq(ScalarExpression expr) Equality operator (equals to)
java.lang.Object	getValue() Accessor to the literal value
BooleanExpression	gt(ScalarExpression expr) Relational operator (greater than)
BooleanExpression	gteq(ScalarExpression expr) Relational operator (greater than or equals)
BooleanExpression	lt(ScalarExpression expr) Relational operator (lower than)
BooleanExpression	lteq(ScalarExpression expr) Relational operator (lower than or equals)
ScalarExpression	mod(ScalarExpression expr) Method to return a modulus expression.
ScalarExpression	neg() Unary Minus Operator
BooleanExpression	noteq(ScalarExpression expr) Equality operator (not equals to)
ScalarExpression	sub(ScalarExpression expr) Additive Operator.
CharacterExpression	toLowerCaseMethod() Converts the Character Literal to lower case
CharacterExpression	toUpperCaseMethod() Converts the Character Literal to upper case

Methods inherited from class org.jpox.store.expression.CharacterExpression

div, in, mul

Methods inherited from class org.jpox.store.expression.ScalarExpression

accessField, and, as, callMethod, cast, encloseWithInParentheses, eor, equals, getAlias, getExpressionList, getLogicSetExpression, getMapping, getNonAliasExpression, getQueryExpression, instanceOf, ior, not, toStatementText, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CharacterLiteral

public CharacterLiteral(QueryExpression qs,
                        JavaTypeMapping mapping,
                        char value)

Creates a char literal

Parameters:

qs - the QueryExpression

mapping - the mapping

value - the char value

CharacterLiteral

public CharacterLiteral(QueryExpression qs,
                        JavaTypeMapping mapping,
                        java.lang.String value)

Creates a char literal

Parameters:

qs - the QueryExpression

mapping - the mapping

value - the char value

Method Detail

getValue

public java.lang.Object getValue()

Description copied from interface: Literal

Accessor to the literal value

Specified by:

getValue in interface Literal

Returns:

the value of the literal

eq

public BooleanExpression eq(ScalarExpression expr)

Description copied from class: ScalarExpression

Equality operator (equals to)

Overrides:

eq in class CharacterExpression

Parameters:

expr - the right-hand operand

Returns:

The type of an equality expression is a boolean

noteq

public BooleanExpression noteq(ScalarExpression expr)

Description copied from class: ScalarExpression

Equality operator (not equals to)

Overrides:

noteq in class CharacterExpression

Parameters:

expr - the right-hand operand

Returns:

The type of an equality expression is a boolean

lt

public BooleanExpression lt(ScalarExpression expr)

Description copied from class: ScalarExpression

Relational operator (lower than)

Overrides:

lt in class CharacterExpression

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(ScalarExpression expr)

Description copied from class: ScalarExpression

Relational operator (lower than or equals)

Overrides:

lteq in class CharacterExpression

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(ScalarExpression expr)

Description copied from class: ScalarExpression

Relational operator (greater than)

Overrides:

gt in class CharacterExpression

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(ScalarExpression expr)

Description copied from class: ScalarExpression

Relational operator (greater than or equals)

Overrides:

gteq in class CharacterExpression

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.

add

public ScalarExpression add(ScalarExpression expr)

Description copied from class: ScalarExpression

Additive Operator. The binary + operator performs addition when applied to two operands of numeric type, producing the sum of the operands. If the type of either operand of a + operator is String, then the operation is string concatenation.

Overrides:

add in class CharacterExpression

Parameters:

expr - the right-hand operand

Returns:

If one of the operands is String, the returned value is the string concatenation; The sum of two operands of numeric type. The left-hand operand is the minuend and the right-hand operand is the subtrahend;

sub

public ScalarExpression sub(ScalarExpression expr)

Description copied from class: ScalarExpression

Additive Operator. The binary - operator subtracts right-hand operand from left-hand operand.

Overrides:

sub in class CharacterExpression

Parameters:

expr - the right-hand operand

Returns:

The binary - operator performs subtraction when applied to two operands of numeric type producing the difference of its operands; the left-hand operand is the minuend and the right-hand operand is the subtrahend.

mod

public ScalarExpression mod(ScalarExpression expr)

Description copied from class: CharacterExpression

Method to return a modulus expression.

Overrides:

mod in class CharacterExpression

Parameters:

expr - The expression to modulus against

Returns:

The modulus expression

toLowerCaseMethod

public CharacterExpression toLowerCaseMethod()

Converts the Character Literal to lower case

Overrides:

toLowerCaseMethod in class CharacterExpression

Returns:

the lowercased Character Literal

toUpperCaseMethod

public CharacterExpression toUpperCaseMethod()

Converts the Character Literal to upper case

Overrides:

toUpperCaseMethod in class CharacterExpression

Returns:

the uppercased Character Literal

neg

public ScalarExpression neg()

Description copied from class: ScalarExpression

Unary Minus Operator

Overrides:

neg in class CharacterExpression

Returns:

the type of the unary minus expression is the promoted type of the operand.

com

public ScalarExpression com()

Description copied from class: ScalarExpression

Bitwise Complement Operator

Overrides:

com in class CharacterExpression

Returns:

the type of the unary bitwise complement expression is the promoted type of the operand.