public abstract class BinaryListOperatorNode extends ValueNode
Modifier and Type | Field and Description |
---|---|
protected ValueNode |
leftOperand |
protected java.lang.String |
methodName |
protected java.lang.String |
operator |
protected ValueNodeList |
rightOperandList |
AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX
Constructor and Description |
---|
BinaryListOperatorNode() |
Modifier and Type | Method and Description |
---|---|
void |
copyFrom(QueryTreeNode node)
Fill this node with a deep copy of the given node.
|
ValueNode |
getLeftOperand()
Get the leftOperand
|
ValueNodeList |
getRightOperandList()
Get the rightOperandList
|
void |
init(java.lang.Object leftOperand,
java.lang.Object rightOperandList,
java.lang.Object operator,
java.lang.Object methodName)
Initializer for a BinaryListOperatorNode
|
boolean |
isConstantExpression()
Return whether or not this expression tree represents a constant expression.
|
protected boolean |
isEquivalent(ValueNode o)
Tests if this node is equivalent to the specified ValueNode.
|
void |
printSubNodes(int depth)
Prints the sub-nodes of this object.
|
void |
setLeftOperand(ValueNode newLeftOperand)
Set the leftOperand to the specified ValueNode
|
void |
setRightOperandList(ValueNodeList newRightOperandList)
Set the rightOperandList to the specified ValueNodeList
|
java.lang.String |
toString()
Convert this object to a String.
|
getColumnName, getSchemaName, getSourceResultColumn, getTableName, getType, getTypeId, init, isBinaryEqualsOperatorNode, isBooleanFalse, isBooleanTrue, isInListProbeNode, isParameterNode, isRelationalOperator, isSameNodeType, setNullability, setType
accept, convertDefaultNode, debugFlush, debugPrint, formatNodeString, getBeginOffset, getDebugOutput, getEndOffset, getNodeFactory, getNodeType, getNullNode, getParserContext, getStatementType, getUserData, init, init, init, init, init, init, init, init, init, init, init, init, isInstanceOf, makeTableName, makeTableName, nodeHeader, printLabel, setBeginOffset, setDebugOutput, setEndOffset, setNodeType, setParserContext, setUserData, stackPrint, treePrint, treePrint, treePrint
protected java.lang.String methodName
protected java.lang.String operator
protected ValueNode leftOperand
protected ValueNodeList rightOperandList
public void init(java.lang.Object leftOperand, java.lang.Object rightOperandList, java.lang.Object operator, java.lang.Object methodName)
init
in class QueryTreeNode
leftOperand
- The left operand of the noderightOperandList
- The right operand list of the nodeoperator
- String representation of operatorpublic void copyFrom(QueryTreeNode node) throws StandardException
copyFrom
in class ValueNode
StandardException
public java.lang.String toString()
public void printSubNodes(int depth)
printSubNodes
in class QueryTreeNode
depth
- The depth of this node in the treepublic void setLeftOperand(ValueNode newLeftOperand)
newLeftOperand
- The new leftOperandpublic ValueNode getLeftOperand()
public void setRightOperandList(ValueNodeList newRightOperandList)
newRightOperandList
- The new rightOperandListpublic ValueNodeList getRightOperandList()
public boolean isConstantExpression()
isConstantExpression
in class ValueNode
protected boolean isEquivalent(ValueNode o) throws StandardException
ValueNode
This method provides basic expression matching facility for the derived class of ValueNode and it is used by the language layer to compare the node structural form of the two expressions for equivalence at bind phase.
Note that it is not comparing the actual row values at runtime to produce a result; hence, when comparing SQL NULLs, they are considered to be equivalent and not unknown.
One usage case of this method in this context is to compare the select column expression against the group by expression to check if they are equivalent. e.g.:
SELECT c1+c2 FROM t1 GROUP BY c1+c2
In general, node equivalence is determined by the derived class of ValueNode. But they generally abide to the rules below:
isEquivalent
in class ValueNode
o
- the node to compare this ValueNode against.true
if the two nodes are equivalent,
false
otherwise.StandardException
Copyright © 2013. All Rights Reserved.