unity.query
Class LQGroupByNode
java.lang.Object
unity.query.LQNode
unity.query.LQGroupByNode
- All Implemented Interfaces:
- LQTreeConstants
public class LQGroupByNode
- extends LQNode
Fields inherited from interface unity.query.LQTreeConstants |
ADD, AGGREGATEFUNCTION, AND, APPEND, ARITH_OP, ARITHMETICFUNCTION, AS_IDENTIFIER, AS_TABLE, BAG_DIFFERENCE, BAG_INTERSECTION, BAG_UNION, BigDecimal, COMPARISON_OP, CONDITION, CONSTANTEXPRESSION, CROSSPRODUCT, DIFFERENCE, DISTRIBUTEDJOIN, DUPLICATE_ELIMINATION, DYNAMICHASHJOIN, EARLYHASHJOIN, EARLYHASHJOIN_NOBUFFER, EXPRESSION, FILTER, FULLOUTERJOIN, FUNCTION, GROUPBY, HAVING, IDENTIFIER, IN, INNERJOIN, INTEGER, INTERSECTION, JOIN, LEFTOUTERJOIN, MATCHFUNCTION, MERGE, MERGEJOIN, MINIMUM_JOIN_BUFFER_SIZE, MULT, MULT_OP, NESTEDLOOPJOIN, NOT, OR, ORDERBY, PRODUCT, PROJECTION, REAL, RIGHTOUTERJOIN, SELECTION, SQLPATTERN, STRING, TABLE, TABLE_IDENTIFIER, UNION, UNKNOWN, XOR |
Methods inherited from class unity.query.LQNode |
addChild, clone, containsChild, getAllExprNodes, getChild, getChild, getChildren, getContent, getNumChildren, getOperator, getOutputRelation, getParent, getReference, getType, hasChildren, indexOfChild, print, removeChild, removeChild, removeChild, replaceChild, setChild, setContent, setMemorySizeTuples, setOperator, setParent, setReference, setType, stripDBAttr, stripDBTable |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
LQGroupByNode
public LQGroupByNode()
addGroupByExpression
public void addGroupByExpression(LQExprNode exprNode)
findAggregateFunction
public LQExprNode findAggregateFunction(LQExprNode func)
addAggregateFunction
public void addAggregateFunction(LQExprNode func)
isEmpty
public boolean isEmpty()
isEmptyGrouping
public boolean isEmptyGrouping()
validateField
public void validateField(LQExprNode exprNode)
throws java.sql.SQLException
- Throws:
java.sql.SQLException
isAggregateFunction
public static boolean isAggregateFunction(java.lang.String fn)
generateSQL
public java.lang.String generateSQL()
- Specified by:
generateSQL
in class LQNode
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object
buildOperator
public Operator buildOperator(Operator[] children)
throws java.sql.SQLException
- Specified by:
buildOperator
in class LQNode
- Throws:
java.sql.SQLException
getProjectedFields
public java.util.ArrayList getProjectedFields(java.util.ArrayList projectFields)
getProjectedFunctionExpr
public java.util.ArrayList getProjectedFunctionExpr(java.util.ArrayList projectFunctionFields)
getExpressions
public java.util.ArrayList getExpressions()
getRequiredFields
public java.util.ArrayList getRequiredFields()
- Overrides:
getRequiredFields
in class LQNode
numTuples
public int numTuples()
- Overrides:
numTuples
in class LQNode
tupleSize
public int tupleSize()
- Overrides:
tupleSize
in class LQNode