org.apache.cayenne.exp
Class BinaryExpression

java.lang.Object
  org.apache.cayenne.exp.Expression
      org.apache.cayenne.exp.BinaryExpression

All Implemented Interfaces:

java.io.Serializable, XMLSerializable

Deprecated. since 1.2

public class BinaryExpression
extends Expression

Generic binary expression. Describes an expression in a form: "leftoperand operation rightoperand". SQL has a lot of binary expressions, for example AND, OR, =, etc.

Author:

Andrus Adamchik

See Also:

Serialized Form

Field Summary

protected java.lang.Object	leftOperand Deprecated.
protected java.lang.Object	rightOperand Deprecated.

Fields inherited from class org.apache.cayenne.exp.Expression

ADD, ALL, AND, ANY, AVG, BETWEEN, COUNT, DB_PATH, DIVIDE, EQUAL_TO, EXISTS, GREATER_THAN, GREATER_THAN_EQUAL_TO, IN, LESS_THAN, LESS_THAN_EQUAL_TO, LIKE, LIKE_IGNORE_CASE, LIST, MAX, MIN, MULTIPLY, NEGATIVE, NOT, NOT_BETWEEN, NOT_EQUAL_TO, NOT_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, POSITIVE, PRUNED_NODE, RAW_SQL, SOME, SUBQUERY, SUBTRACT, SUM, type

Constructor Summary

BinaryExpression()
Deprecated.

BinaryExpression(int type)
Deprecated.

Method Summary

void	encodeAsString(java.io.PrintWriter pw) Deprecated. Stores a String representation of Expression using a provided PrintWriter.
java.lang.Object	evaluate(java.lang.Object o) Deprecated. Calculates expression value with object as a context for path expressions.
protected void	flattenTree() Deprecated. Restructures expression to make sure that there are no children of the same type as this expression.
java.lang.Object	getOperand(int index) Deprecated. Returns a value of operand at index.
int	getOperandCount() Deprecated. Returns a count of operands of this expression.
Expression	notExp() Deprecated. Returns a logical NOT of current expression.
protected boolean	pruneNodeForPrunedChild(java.lang.Object prunedChild) Deprecated. Returns true if this node should be pruned from expression tree in the event a child is removed.
void	setOperand(int index, java.lang.Object value) Deprecated. Sets a value of operand at index.
Expression	shallowCopy() Deprecated. Creates a copy of this expression node, without copying children.

Methods inherited from class org.apache.cayenne.exp.Expression

andExp, deepCopy, encodeAsXML, equals, expName, expWithParameters, expWithParameters, filter, filterObjects, fromString, getType, joinExp, match, orExp, setType, toString, transform, transformExpression, traverse, traverse

Methods inherited from class java.lang.Object

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

Field Detail

leftOperand

protected java.lang.Object leftOperand

Deprecated.

rightOperand

protected java.lang.Object rightOperand

Deprecated.

Constructor Detail

BinaryExpression

public BinaryExpression()

Deprecated.

BinaryExpression

public BinaryExpression(int type)

Deprecated.

Method Detail

flattenTree

protected void flattenTree()

Deprecated.

Description copied from class: Expression

Restructures expression to make sure that there are no children of the same type as this expression.

Specified by:

flattenTree in class Expression

pruneNodeForPrunedChild

protected boolean pruneNodeForPrunedChild(java.lang.Object prunedChild)

Deprecated.

Description copied from class: Expression

Returns true if this node should be pruned from expression tree in the event a child is removed.

Specified by:

pruneNodeForPrunedChild in class Expression

getOperandCount

public final int getOperandCount()

Deprecated.

Description copied from class: Expression

Returns a count of operands of this expression. In real life there are unary (count == 1), binary (count == 2) and ternary (count == 3) expressions.

Specified by:

getOperandCount in class Expression

evaluate

public java.lang.Object evaluate(java.lang.Object o)

Deprecated.

Description copied from class: Expression

Calculates expression value with object as a context for path expressions.

Specified by:

evaluate in class Expression

shallowCopy

public Expression shallowCopy()

Deprecated.

Creates a copy of this expression node, without copying children.

Specified by:

shallowCopy in class Expression

Since:

1.1

notExp

public Expression notExp()

Deprecated.

Description copied from class: Expression

Returns a logical NOT of current expression.

Specified by:

notExp in class Expression

getOperand

public java.lang.Object getOperand(int index)

Deprecated.

Description copied from class: Expression

Returns a value of operand at index. Operand indexing starts at 0.

Specified by:

getOperand in class Expression

setOperand

public void setOperand(int index,
                       java.lang.Object value)

Deprecated.

Description copied from class: Expression

Sets a value of operand at index. Operand indexing starts at 0.

Specified by:

setOperand in class Expression

encodeAsString

public void encodeAsString(java.io.PrintWriter pw)

Deprecated.

Description copied from class: Expression

Stores a String representation of Expression using a provided PrintWriter.

Specified by:

encodeAsString in class Expression

Since:

1.1