unity.query
Class LQNode
java.lang.Object
unity.query.LQNode
- All Implemented Interfaces:
- LQTreeConstants
- Direct Known Subclasses:
- LQCondNode, LQDupElimNode, LQExprNode, LQGroupByNode, LQJoinNode, LQOrderByNode, LQProductNode, LQProjNode, LQSelNode, LQUnionNode
public abstract class LQNode
- extends java.lang.Object
- implements LQTreeConstants
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 java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LQNode
public LQNode()
LQNode
public LQNode(LQNode n)
setOperator
public void setOperator(Operator o)
getOperator
public Operator getOperator()
clone
public java.lang.Object clone()
- Overrides:
clone
in class java.lang.Object
setMemorySizeTuples
public void setMemorySizeTuples(long l)
setType
public void setType(int t)
getType
public int getType()
getParent
public LQNode getParent()
setParent
public void setParent(LQNode parent)
hasChildren
public boolean hasChildren()
getNumChildren
public int getNumChildren()
getChild
public LQNode getChild(int index)
getChild
public LQNode getChild()
getChildren
public java.util.ArrayList getChildren()
indexOfChild
public int indexOfChild(LQNode child)
containsChild
public boolean containsChild(LQNode child)
addChild
public void addChild(LQNode child)
removeChild
public void removeChild(int index)
removeChild
public void removeChild(LQNode n)
removeChild
public void removeChild()
getContent
public java.lang.Object getContent()
setContent
public void setContent(java.lang.Object content)
getReference
public java.lang.Object getReference()
setReference
public void setReference(java.lang.Object ref)
replaceChild
public void replaceChild(LQNode oldChild,
LQNode newChild)
setChild
public void setChild(int idx,
LQNode newChild)
getRequiredFields
public java.util.ArrayList getRequiredFields()
numTuples
public int numTuples()
tupleSize
public int tupleSize()
getOutputRelation
public Relation getOutputRelation()
stripDBAttr
public java.lang.String stripDBAttr(java.lang.String attribute)
stripDBTable
public java.lang.String stripDBTable(java.lang.String table)
generateSQL
public abstract java.lang.String generateSQL()
buildOperator
public abstract Operator buildOperator(Operator[] children)
throws java.sql.SQLException
- Throws:
java.sql.SQLException
print
public void print(int k)
getAllExprNodes
public static java.util.ArrayList getAllExprNodes(LQNode node)