org.apache.drill.exec.store.druid

Class DruidCompareFunctionProcessor

java.lang.Object

org.apache.drill.common.expression.visitors.AbstractExprVisitor<Boolean,LogicalExpression,RuntimeException>

org.apache.drill.exec.store.druid.DruidCompareFunctionProcessor

All Implemented Interfaces:

ExprVisitor<Boolean,LogicalExpression,RuntimeException>

public class DruidCompareFunctionProcessor
extends AbstractExprVisitor<Boolean,LogicalExpression,RuntimeException>

Constructor Summary

Constructors

Constructor and Description
DruidCompareFunctionProcessor(String functionName)

Method Summary

Modifier and Type	Method and Description
String	getFunctionName()
SchemaPath	getPath()
Object	getValue()
static boolean	isCompareFunction(String functionName)
boolean	isSuccess()
static DruidCompareFunctionProcessor	process(FunctionCall call)
Boolean	visitCastExpression(CastExpression e, LogicalExpression valueArg)
Boolean	visitConvertExpression(ConvertExpression e, LogicalExpression valueArg)
Boolean	visitSchemaPath(SchemaPath path, LogicalExpression valueArg)
Boolean	visitUnknown(LogicalExpression e, LogicalExpression valueArg) Handles implementation-specific expressions not known to the visitor structure.

Methods inherited from class org.apache.drill.common.expression.visitors.AbstractExprVisitor

visitAnyValueExpression, visitBooleanConstant, visitBooleanOperator, visitDateConstant, visitDecimal18Constant, visitDecimal28Constant, visitDecimal38Constant, visitDecimal9Constant, visitDoubleConstant, visitFloatConstant, visitFunctionCall, visitFunctionHolderExpression, visitIfExpression, visitIntConstant, visitIntervalDayConstant, visitIntervalYearConstant, visitLongConstant, visitNullConstant, visitNullExpression, visitParameter, visitQuotedStringConstant, visitTimeConstant, visitTimeStampConstant, visitTypedFieldExpr, visitVarDecimalConstant

Methods inherited from class java.lang.Object

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

Constructor Detail

DruidCompareFunctionProcessor

public DruidCompareFunctionProcessor(String functionName)

Method Detail

isCompareFunction

public static boolean isCompareFunction(String functionName)

process

public static DruidCompareFunctionProcessor process(FunctionCall call)

getValue

public Object getValue()

isSuccess

public boolean isSuccess()

getPath

public SchemaPath getPath()

getFunctionName

public String getFunctionName()

visitCastExpression

public Boolean visitCastExpression(CastExpression e,
                                   LogicalExpression valueArg)
                            throws RuntimeException

Specified by:

visitCastExpression in interface ExprVisitor<Boolean,LogicalExpression,RuntimeException>

Overrides:

visitCastExpression in class AbstractExprVisitor<Boolean,LogicalExpression,RuntimeException>

Throws:

RuntimeException

visitConvertExpression

public Boolean visitConvertExpression(ConvertExpression e,
                                      LogicalExpression valueArg)
                               throws RuntimeException

Specified by:

visitConvertExpression in interface ExprVisitor<Boolean,LogicalExpression,RuntimeException>

Overrides:

visitConvertExpression in class AbstractExprVisitor<Boolean,LogicalExpression,RuntimeException>

Throws:

RuntimeException

visitUnknown

public Boolean visitUnknown(LogicalExpression e,
                            LogicalExpression valueArg)
                     throws RuntimeException

Description copied from class: AbstractExprVisitor

Handles implementation-specific expressions not known to the visitor structure. Since there are no "visitFoo" methods for these "unknown" expressions, subclassses should use the functionally-equivalent instanceof approach to parse out these "unknown" expressions.

Specified by:

visitUnknown in interface ExprVisitor<Boolean,LogicalExpression,RuntimeException>

Overrides:

visitUnknown in class AbstractExprVisitor<Boolean,LogicalExpression,RuntimeException>

Throws:

RuntimeException

visitSchemaPath

public Boolean visitSchemaPath(SchemaPath path,
                               LogicalExpression valueArg)
                        throws RuntimeException

Specified by:

visitSchemaPath in interface ExprVisitor<Boolean,LogicalExpression,RuntimeException>

Overrides:

visitSchemaPath in class AbstractExprVisitor<Boolean,LogicalExpression,RuntimeException>

Throws:

RuntimeException