Class ColumnExpNode
- java.lang.Object
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- com.ibm.fhir.database.utils.query.node.ColumnExpNode
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Field Summary
Fields Modifier and Type Field Description (package private) String
columnName
(package private) String
tableAlias
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Constructor Summary
Constructors Constructor Description ColumnExpNode(String columnName)
Public constructorColumnExpNode(String tableAlias, String columnName)
Public constructor
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
isOperand()
Is this expression node an operandvoid
popOperands(Stack<ExpNode> stack)
Read the operands from the stackint
precedence()
Precedence of this expression node.String
toString()
<T> T
visit(ExpNodeVisitor<T> visitor)
Generic evaluation visitor-
Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface com.ibm.fhir.database.utils.query.node.ExpNode
isLeftParen, isOperator, isRightParen
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Method Detail
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visit
public <T> T visit(ExpNodeVisitor<T> visitor)
Description copied from interface:ExpNode
Generic evaluation visitor
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precedence
public int precedence()
Description copied from interface:ExpNode
Precedence of this expression node. Used to parse the expression into the correct tree. We use 0 to represent the highest precedence- Specified by:
precedence
in interfaceExpNode
- Returns:
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popOperands
public void popOperands(Stack<ExpNode> stack)
Description copied from interface:ExpNode
Read the operands from the stack- Specified by:
popOperands
in interfaceExpNode
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isOperand
public boolean isOperand()
Description copied from interface:ExpNode
Is this expression node an operand
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