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

java.lang.Object
  extended by org.datanucleus.store.rdbms.sql.expression.SQLExpression
      extended by org.datanucleus.store.rdbms.sql.expression.CharacterExpression
          extended by org.datanucleus.store.rdbms.sql.expression.CharacterLiteral
All Implemented Interfaces:
SQLLiteral

public class CharacterLiteral
extends CharacterExpression
implements SQLLiteral

Representation of a Character literal 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
isParameter, LOCALISER, lowestOperator, mapping, st, stmt, subExprs, table
 
Constructor Summary
CharacterLiteral(SQLStatement stmt, org.datanucleus.store.mapped.mapping.JavaTypeMapping mapping, java.lang.Object value, boolean parameter)
          Constructor for a character literal with a value.
 
Method Summary
 SQLExpression add(SQLExpression expr)
          Additive Operator.
 SQLExpression com()
          Bitwise Complement Operator
 BooleanExpression eq(SQLExpression expr)
          Equality operator (equals to)
 BooleanExpression ge(SQLExpression expr)
          Relational operator (greater than or equals)
 java.lang.Object getValue()
          Accessor to the literal value
 BooleanExpression gt(SQLExpression expr)
          Relational operator (greater than)
 SQLExpression invoke(java.lang.String methodName, java.util.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)
 SQLExpression mod(SQLExpression expr)
          Method to return a modulus expression.
 BooleanExpression ne(SQLExpression expr)
          Not equality operator (not equals to)
 SQLExpression neg()
          Unary Minus Operator
 void setNotParameter()
          Method to set this literal as not being a parameter.
protected  void setStatement()
           
 SQLExpression sub(SQLExpression expr)
          Additive Operator.
 
Methods inherited from class org.datanucleus.store.rdbms.sql.expression.CharacterExpression
div, in, mul
 
Methods inherited from class org.datanucleus.store.rdbms.sql.expression.SQLExpression
and, cast, checkForAndCorrectParameterComparison, encloseInParentheses, eor, getJavaTypeMapping, getNumberOfSubExpressions, getSQLStatement, getSQLTable, ior, is, isParameter, not, toSQLText
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

CharacterLiteral

public CharacterLiteral(SQLStatement stmt,
                        org.datanucleus.store.mapped.mapping.JavaTypeMapping mapping,
                        java.lang.Object value,
                        boolean parameter)
Constructor for a character literal with a value.

Parameters:
stmt - the SQL statement
mapping - the mapping
value - the value
parameter - Whether this is treated as a parameter (JDBC "?")
Method Detail

eq

public BooleanExpression eq(SQLExpression expr)
Description copied from class: SQLExpression
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

ne

public BooleanExpression ne(SQLExpression expr)
Description copied from class: SQLExpression
Not equality operator (not equals to)

Overrides:
ne in class CharacterExpression
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 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.

le

public BooleanExpression le(SQLExpression expr)
Description copied from class: SQLExpression
Relational operator (lower than or equals)

Overrides:
le 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(SQLExpression expr)
Description copied from class: SQLExpression
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.

ge

public BooleanExpression ge(SQLExpression expr)
Description copied from class: SQLExpression
Relational operator (greater than or equals)

Overrides:
ge 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 SQLExpression add(SQLExpression expr)
Description copied from class: SQLExpression
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 SQLExpression sub(SQLExpression expr)
Description copied from class: SQLExpression
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 SQLExpression mod(SQLExpression 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

neg

public SQLExpression neg()
Description copied from class: SQLExpression
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 SQLExpression com()
Description copied from class: SQLExpression
Bitwise Complement Operator

Overrides:
com in class CharacterExpression
Returns:
the type of the unary bitwise complement expression is the promoted type of the operand.

invoke

public SQLExpression invoke(java.lang.String methodName,
                            java.util.List args)
Description copied from class: SQLExpression
Invocation of a method on this expression.

Overrides:
invoke in class CharacterExpression
Parameters:
methodName - name of the method to invoke
args - Args to this method (if any)
Returns:
the converted value

getValue

public java.lang.Object getValue()
Description copied from interface: SQLLiteral
Accessor to the literal value

Specified by:
getValue in interface SQLLiteral
Returns:
the value of the literal

setNotParameter

public void setNotParameter()
Description copied from interface: SQLLiteral
Method to set this literal as not being a parameter. If the literal if not currently a parameter then does nothing. Updates any underlying SQL to have the value.

Specified by:
setNotParameter in interface SQLLiteral

setStatement

protected void setStatement()


Copyright © 2009. All Rights Reserved.