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java.lang.Objectorg.apache.cayenne.exp.Expression
org.apache.cayenne.exp.BinaryExpression
public class BinaryExpression
Generic binary expression. Describes an expression in a form: "leftoperand operation rightoperand
".
SQL has a lot of binary expressions, for example AND, OR, =, etc.
Field Summary | |
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protected java.lang.Object |
leftOperand
Deprecated. |
protected java.lang.Object |
rightOperand
Deprecated. |
Fields inherited from class org.apache.cayenne.exp.Expression |
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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 | |
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BinaryExpression()
Deprecated. |
|
BinaryExpression(int type)
Deprecated. |
Method Summary | |
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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 |
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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 |
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clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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protected java.lang.Object leftOperand
protected java.lang.Object rightOperand
Constructor Detail |
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public BinaryExpression()
public BinaryExpression(int type)
Method Detail |
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protected void flattenTree()
Expression
flattenTree
in class Expression
protected boolean pruneNodeForPrunedChild(java.lang.Object prunedChild)
Expression
pruneNodeForPrunedChild
in class Expression
public final int getOperandCount()
Expression
getOperandCount
in class Expression
public java.lang.Object evaluate(java.lang.Object o)
Expression
evaluate
in class Expression
public Expression shallowCopy()
shallowCopy
in class Expression
public Expression notExp()
Expression
notExp
in class Expression
public java.lang.Object getOperand(int index)
Expression
index
. Operand indexing starts at 0.
getOperand
in class Expression
public void setOperand(int index, java.lang.Object value)
Expression
index
. Operand indexing starts at 0.
setOperand
in class Expression
public void encodeAsString(java.io.PrintWriter pw)
Expression
encodeAsString
in class Expression
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