org.apache.drill.exec.expr

Class FilterBuilder

java.lang.Object

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

org.apache.drill.exec.expr.FilterBuilder

All Implemented Interfaces:

ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

public class FilterBuilder
extends AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

A visitor which visits a materialized logical expression, and build FilterPredicate If a visitXXX method returns null, that means the corresponding filter branch is not qualified for push down.

Method Summary

Modifier and Type	Method and Description
static FilterPredicate<?>	buildFilterPredicate(LogicalExpression expr, Set<LogicalExpression> constantBoundaries, UdfUtilities udfUtilities, boolean omitUnsupportedExprs)
LogicalExpression	visitBooleanConstant(ValueExpressions.BooleanExpression booleanExpression, Set<LogicalExpression> value)
LogicalExpression	visitBooleanOperator(BooleanOperator op, Set<LogicalExpression> value)
LogicalExpression	visitDateConstant(ValueExpressions.DateExpression dateExpr, Set<LogicalExpression> value)
LogicalExpression	visitDoubleConstant(ValueExpressions.DoubleExpression dExpr, Set<LogicalExpression> value)
LogicalExpression	visitFloatConstant(ValueExpressions.FloatExpression fExpr, Set<LogicalExpression> value)
LogicalExpression	visitFunctionHolderExpression(FunctionHolderExpression funcHolderExpr, Set<LogicalExpression> value)
LogicalExpression	visitIntConstant(ValueExpressions.IntExpression intExpr, Set<LogicalExpression> value)
LogicalExpression	visitLongConstant(ValueExpressions.LongExpression intExpr, Set<LogicalExpression> value)
LogicalExpression	visitQuotedStringConstant(ValueExpressions.QuotedString quotedString, Set<LogicalExpression> value)
LogicalExpression	visitTimeConstant(ValueExpressions.TimeExpression timeExpr, Set<LogicalExpression> value)
LogicalExpression	visitTimeStampConstant(ValueExpressions.TimeStampExpression tsExpr, Set<LogicalExpression> value)
LogicalExpression	visitTypedFieldExpr(TypedFieldExpr typedFieldExpr, Set<LogicalExpression> value)
LogicalExpression	visitUnknown(LogicalExpression e, Set<LogicalExpression> value) Handles implementation-specific expressions not known to the visitor structure.
LogicalExpression	visitVarDecimalConstant(ValueExpressions.VarDecimalExpression decExpr, Set<LogicalExpression> value)

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

visitAnyValueExpression, visitCastExpression, visitConvertExpression, visitDecimal18Constant, visitDecimal28Constant, visitDecimal38Constant, visitDecimal9Constant, visitFunctionCall, visitIfExpression, visitIntervalDayConstant, visitIntervalYearConstant, visitNullConstant, visitNullExpression, visitParameter, visitSchemaPath

Methods inherited from class java.lang.Object

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

Method Detail

buildFilterPredicate

public static FilterPredicate<?> buildFilterPredicate(LogicalExpression expr,
                                                      Set<LogicalExpression> constantBoundaries,
                                                      UdfUtilities udfUtilities,
                                                      boolean omitUnsupportedExprs)

Parameters:

expr - materialized filter expression

constantBoundaries - set of constant expressions

udfUtilities - udf utilities

Returns:

metadata filter predicate

visitUnknown

public LogicalExpression visitUnknown(LogicalExpression e,
                                      Set<LogicalExpression> value)

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<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitUnknown in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitTypedFieldExpr

public LogicalExpression visitTypedFieldExpr(TypedFieldExpr typedFieldExpr,
                                             Set<LogicalExpression> value)

Specified by:

visitTypedFieldExpr in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitTypedFieldExpr in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitIntConstant

public LogicalExpression visitIntConstant(ValueExpressions.IntExpression intExpr,
                                          Set<LogicalExpression> value)

Specified by:

visitIntConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitIntConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitDoubleConstant

public LogicalExpression visitDoubleConstant(ValueExpressions.DoubleExpression dExpr,
                                             Set<LogicalExpression> value)

Specified by:

visitDoubleConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitDoubleConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitFloatConstant

public LogicalExpression visitFloatConstant(ValueExpressions.FloatExpression fExpr,
                                            Set<LogicalExpression> value)

Specified by:

visitFloatConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitFloatConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitLongConstant

public LogicalExpression visitLongConstant(ValueExpressions.LongExpression intExpr,
                                           Set<LogicalExpression> value)

Specified by:

visitLongConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitLongConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitVarDecimalConstant

public LogicalExpression visitVarDecimalConstant(ValueExpressions.VarDecimalExpression decExpr,
                                                 Set<LogicalExpression> value)

Specified by:

visitVarDecimalConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitVarDecimalConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitDateConstant

public LogicalExpression visitDateConstant(ValueExpressions.DateExpression dateExpr,
                                           Set<LogicalExpression> value)

Specified by:

visitDateConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitDateConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitTimeStampConstant

public LogicalExpression visitTimeStampConstant(ValueExpressions.TimeStampExpression tsExpr,
                                                Set<LogicalExpression> value)

Specified by:

visitTimeStampConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitTimeStampConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitTimeConstant

public LogicalExpression visitTimeConstant(ValueExpressions.TimeExpression timeExpr,
                                           Set<LogicalExpression> value)

Specified by:

visitTimeConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitTimeConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitBooleanConstant

public LogicalExpression visitBooleanConstant(ValueExpressions.BooleanExpression booleanExpression,
                                              Set<LogicalExpression> value)

Specified by:

visitBooleanConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitBooleanConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitQuotedStringConstant

public LogicalExpression visitQuotedStringConstant(ValueExpressions.QuotedString quotedString,
                                                   Set<LogicalExpression> value)

Specified by:

visitQuotedStringConstant in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitQuotedStringConstant in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitBooleanOperator

public LogicalExpression visitBooleanOperator(BooleanOperator op,
                                              Set<LogicalExpression> value)

Specified by:

visitBooleanOperator in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitBooleanOperator in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

visitFunctionHolderExpression

public LogicalExpression visitFunctionHolderExpression(FunctionHolderExpression funcHolderExpr,
                                                       Set<LogicalExpression> value)

Specified by:

visitFunctionHolderExpression in interface ExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>

Overrides:

visitFunctionHolderExpression in class AbstractExprVisitor<LogicalExpression,Set<LogicalExpression>,RuntimeException>