org.apache.tajo.plan.verifier

Class ExprsVerifier

java.lang.Object

org.apache.tajo.plan.expr.BasicEvalNodeVisitor<VerificationState,EvalNode>

org.apache.tajo.plan.verifier.ExprsVerifier

All Implemented Interfaces:

EvalNodeVisitor2<VerificationState,EvalNode>

public class ExprsVerifier
extends BasicEvalNodeVisitor<VerificationState,EvalNode>

It verifies one predicate or expression with the semantic and data type checks as follows:

Both expressions in a binary expression are compatible to each other
All column references of one expression are available at this node

Constructor Summary

Constructors

Constructor and Description
ExprsVerifier()

Method Summary

Methods

Modifier and Type	Method and Description
static VerificationState	verify(VerificationState state, LogicalNode currentNode, EvalNode expression)
EvalNode	visitDivide(VerificationState context, BinaryEval evalNode, Stack<EvalNode> stack)
EvalNode	visitEqual(VerificationState context, BinaryEval expr, Stack<EvalNode> stack)
EvalNode	visitFuncCall(VerificationState context, GeneralFunctionEval evalNode, Stack<EvalNode> stack)
EvalNode	visitGreaterThan(VerificationState context, BinaryEval expr, Stack<EvalNode> stack)
EvalNode	visitGreaterThanOrEqual(VerificationState context, BinaryEval expr, Stack<EvalNode> stack)
EvalNode	visitLessThan(VerificationState context, BinaryEval expr, Stack<EvalNode> stack)
EvalNode	visitLessThanOrEqual(VerificationState context, BinaryEval expr, Stack<EvalNode> stack)
EvalNode	visitMinus(VerificationState context, BinaryEval evalNode, Stack<EvalNode> stack)
EvalNode	visitModular(VerificationState context, BinaryEval evalNode, Stack<EvalNode> stack)
EvalNode	visitMultiply(VerificationState context, BinaryEval evalNode, Stack<EvalNode> stack)
EvalNode	visitNotEqual(VerificationState context, BinaryEval expr, Stack<EvalNode> stack)
EvalNode	visitPlus(VerificationState context, BinaryEval evalNode, Stack<EvalNode> stack)

Methods inherited from class org.apache.tajo.plan.expr.BasicEvalNodeVisitor

visitAggrFuncCall, visitAnd, visitBetween, visitCaseWhen, visitCast, visitChild, visitConcatenate, visitConst, visitField, visitIfThen, visitInPredicate, visitIsNull, visitLike, visitNot, visitOr, visitRegex, visitRowConstant, visitSigned, visitSimilarTo, visitWindowFunc

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExprsVerifier

public ExprsVerifier()

Method Detail

verify

public static VerificationState verify(VerificationState state,
                       LogicalNode currentNode,
                       EvalNode expression)
                                throws PlanningException

Throws:

PlanningException

visitEqual

public EvalNode visitEqual(VerificationState context,
                  BinaryEval expr,
                  Stack<EvalNode> stack)

Specified by:

visitEqual in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitEqual in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitNotEqual

public EvalNode visitNotEqual(VerificationState context,
                     BinaryEval expr,
                     Stack<EvalNode> stack)

Specified by:

visitNotEqual in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitNotEqual in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitLessThan

public EvalNode visitLessThan(VerificationState context,
                     BinaryEval expr,
                     Stack<EvalNode> stack)

Specified by:

visitLessThan in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitLessThan in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitLessThanOrEqual

public EvalNode visitLessThanOrEqual(VerificationState context,
                            BinaryEval expr,
                            Stack<EvalNode> stack)

Specified by:

visitLessThanOrEqual in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitLessThanOrEqual in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitGreaterThan

public EvalNode visitGreaterThan(VerificationState context,
                        BinaryEval expr,
                        Stack<EvalNode> stack)

Specified by:

visitGreaterThan in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitGreaterThan in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitGreaterThanOrEqual

public EvalNode visitGreaterThanOrEqual(VerificationState context,
                               BinaryEval expr,
                               Stack<EvalNode> stack)

Specified by:

visitGreaterThanOrEqual in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitGreaterThanOrEqual in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitPlus

public EvalNode visitPlus(VerificationState context,
                 BinaryEval evalNode,
                 Stack<EvalNode> stack)

Specified by:

visitPlus in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitPlus in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitMinus

public EvalNode visitMinus(VerificationState context,
                  BinaryEval evalNode,
                  Stack<EvalNode> stack)

Specified by:

visitMinus in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitMinus in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitMultiply

public EvalNode visitMultiply(VerificationState context,
                     BinaryEval evalNode,
                     Stack<EvalNode> stack)

Specified by:

visitMultiply in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitMultiply in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitDivide

public EvalNode visitDivide(VerificationState context,
                   BinaryEval evalNode,
                   Stack<EvalNode> stack)

Specified by:

visitDivide in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitDivide in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitModular

public EvalNode visitModular(VerificationState context,
                    BinaryEval evalNode,
                    Stack<EvalNode> stack)

Specified by:

visitModular in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitModular in class BasicEvalNodeVisitor<VerificationState,EvalNode>

visitFuncCall

public EvalNode visitFuncCall(VerificationState context,
                     GeneralFunctionEval evalNode,
                     Stack<EvalNode> stack)

Specified by:

visitFuncCall in interface EvalNodeVisitor2<VerificationState,EvalNode>

Overrides:

visitFuncCall in class BasicEvalNodeVisitor<VerificationState,EvalNode>