Package org.apache.drill.common.expression

Class ExpressionStringBuilder

java.lang.Object

org.apache.drill.common.expression.visitors.AbstractExprVisitor<Void,StringBuilder,RuntimeException>

org.apache.drill.common.expression.ExpressionStringBuilder

All Implemented Interfaces:

ExprVisitor<Void,StringBuilder,RuntimeException>

public class ExpressionStringBuilder
extends AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Constructor Summary

Constructors

Constructor	Description
ExpressionStringBuilder()

Method Summary

Modifier and Type	Method	Description
static String	escapeBackTick(String input)
static String	escapeSingleQuote(String input)
static String	toString(LogicalExpression expr)
static void	toString(LogicalExpression expr, StringBuilder sb)
Void	visitAnyValueExpression(AnyValueExpression e, StringBuilder sb)
Void	visitBooleanConstant(ValueExpressions.BooleanExpression e, StringBuilder sb)
Void	visitBooleanOperator(BooleanOperator op, StringBuilder sb)
Void	visitCastExpression(CastExpression e, StringBuilder sb)
Void	visitConvertExpression(ConvertExpression e, StringBuilder sb)
Void	visitDateConstant(ValueExpressions.DateExpression lExpr, StringBuilder sb)
Void	visitDecimal18Constant(ValueExpressions.Decimal18Expression decExpr, StringBuilder sb)
Void	visitDecimal28Constant(ValueExpressions.Decimal28Expression decExpr, StringBuilder sb)
Void	visitDecimal38Constant(ValueExpressions.Decimal38Expression decExpr, StringBuilder sb)
Void	visitDecimal9Constant(ValueExpressions.Decimal9Expression decExpr, StringBuilder sb)
Void	visitDoubleConstant(ValueExpressions.DoubleExpression dExpr, StringBuilder sb)
Void	visitFloatConstant(ValueExpressions.FloatExpression fExpr, StringBuilder sb)
Void	visitFunctionCall(FunctionCall call, StringBuilder sb)
Void	visitFunctionHolderExpression(FunctionHolderExpression holder, StringBuilder sb)
Void	visitIfExpression(IfExpression ifExpr, StringBuilder sb)
Void	visitIntConstant(ValueExpressions.IntExpression intExpr, StringBuilder sb)
Void	visitIntervalDayConstant(ValueExpressions.IntervalDayExpression lExpr, StringBuilder sb)
Void	visitIntervalYearConstant(ValueExpressions.IntervalYearExpression lExpr, StringBuilder sb)
Void	visitLongConstant(ValueExpressions.LongExpression lExpr, StringBuilder sb)
Void	visitNullConstant(TypedNullConstant e, StringBuilder sb)
Void	visitNullExpression(NullExpression e, StringBuilder sb)
Void	visitQuotedStringConstant(ValueExpressions.QuotedString e, StringBuilder sb)
Void	visitSchemaPath(SchemaPath path, StringBuilder sb)
Void	visitTimeConstant(ValueExpressions.TimeExpression lExpr, StringBuilder sb)
Void	visitTimeStampConstant(ValueExpressions.TimeStampExpression lExpr, StringBuilder sb)
Void	visitUnknown(LogicalExpression e, StringBuilder sb)	Handles implementation-specific expressions not known to the visitor structure.
Void	visitVarDecimalConstant(ValueExpressions.VarDecimalExpression decExpr, StringBuilder sb)

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

visitParameter, visitTypedFieldExpr

Methods inherited from class java.lang.Object

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

Constructor Details

ExpressionStringBuilder

public ExpressionStringBuilder()

Method Details

toString

public static String toString(LogicalExpression expr)

toString

public static void toString(LogicalExpression expr,
 StringBuilder sb)

escapeSingleQuote

public static String escapeSingleQuote(String input)

escapeBackTick

public static String escapeBackTick(String input)

visitFunctionCall

public Void visitFunctionCall(FunctionCall call,
 StringBuilder sb)
                       throws RuntimeException

Specified by:

visitFunctionCall in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitFunctionCall in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitBooleanOperator

public Void visitBooleanOperator(BooleanOperator op,
 StringBuilder sb)
                          throws RuntimeException

Specified by:

visitBooleanOperator in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitBooleanOperator in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitFunctionHolderExpression

public Void visitFunctionHolderExpression(FunctionHolderExpression holder,
 StringBuilder sb)
                                   throws RuntimeException

Specified by:

visitFunctionHolderExpression in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitFunctionHolderExpression in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitIfExpression

public Void visitIfExpression(IfExpression ifExpr,
 StringBuilder sb)
                       throws RuntimeException

Specified by:

visitIfExpression in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitIfExpression in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitSchemaPath

public Void visitSchemaPath(SchemaPath path,
 StringBuilder sb)
                     throws RuntimeException

Specified by:

visitSchemaPath in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitSchemaPath in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitLongConstant

public Void visitLongConstant(ValueExpressions.LongExpression lExpr,
 StringBuilder sb)
                       throws RuntimeException

Specified by:

visitLongConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitLongConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitDateConstant

public Void visitDateConstant(ValueExpressions.DateExpression lExpr,
 StringBuilder sb)
                       throws RuntimeException

Specified by:

visitDateConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitDateConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitTimeConstant

public Void visitTimeConstant(ValueExpressions.TimeExpression lExpr,
 StringBuilder sb)
                       throws RuntimeException

Specified by:

visitTimeConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitTimeConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitTimeStampConstant

public Void visitTimeStampConstant(ValueExpressions.TimeStampExpression lExpr,
 StringBuilder sb)
                            throws RuntimeException

Specified by:

visitTimeStampConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitTimeStampConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitIntervalYearConstant

public Void visitIntervalYearConstant(ValueExpressions.IntervalYearExpression lExpr,
 StringBuilder sb)
                               throws RuntimeException

Specified by:

visitIntervalYearConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitIntervalYearConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitIntervalDayConstant

public Void visitIntervalDayConstant(ValueExpressions.IntervalDayExpression lExpr,
 StringBuilder sb)
                              throws RuntimeException

Specified by:

visitIntervalDayConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitIntervalDayConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitDecimal9Constant

public Void visitDecimal9Constant(ValueExpressions.Decimal9Expression decExpr,
 StringBuilder sb)
                           throws RuntimeException

Specified by:

visitDecimal9Constant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitDecimal9Constant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitDecimal18Constant

public Void visitDecimal18Constant(ValueExpressions.Decimal18Expression decExpr,
 StringBuilder sb)
                            throws RuntimeException

Specified by:

visitDecimal18Constant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitDecimal18Constant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitDecimal28Constant

public Void visitDecimal28Constant(ValueExpressions.Decimal28Expression decExpr,
 StringBuilder sb)
                            throws RuntimeException

Specified by:

visitDecimal28Constant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitDecimal28Constant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitDecimal38Constant

public Void visitDecimal38Constant(ValueExpressions.Decimal38Expression decExpr,
 StringBuilder sb)
                            throws RuntimeException

Specified by:

visitDecimal38Constant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitDecimal38Constant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitVarDecimalConstant

public Void visitVarDecimalConstant(ValueExpressions.VarDecimalExpression decExpr,
 StringBuilder sb)
                             throws RuntimeException

Specified by:

visitVarDecimalConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitVarDecimalConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitDoubleConstant

public Void visitDoubleConstant(ValueExpressions.DoubleExpression dExpr,
 StringBuilder sb)
                         throws RuntimeException

Specified by:

visitDoubleConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitDoubleConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitBooleanConstant

public Void visitBooleanConstant(ValueExpressions.BooleanExpression e,
 StringBuilder sb)
                          throws RuntimeException

Specified by:

visitBooleanConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitBooleanConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitQuotedStringConstant

public Void visitQuotedStringConstant(ValueExpressions.QuotedString e,
 StringBuilder sb)
                               throws RuntimeException

Specified by:

visitQuotedStringConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitQuotedStringConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitConvertExpression

public Void visitConvertExpression(ConvertExpression e,
 StringBuilder sb)
                            throws RuntimeException

Specified by:

visitConvertExpression in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitConvertExpression in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitAnyValueExpression

public Void visitAnyValueExpression(AnyValueExpression e,
 StringBuilder sb)
                             throws RuntimeException

Specified by:

visitAnyValueExpression in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitAnyValueExpression in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitCastExpression

public Void visitCastExpression(CastExpression e,
 StringBuilder sb)
                         throws RuntimeException

Specified by:

visitCastExpression in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitCastExpression in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitFloatConstant

public Void visitFloatConstant(ValueExpressions.FloatExpression fExpr,
 StringBuilder sb)
                        throws RuntimeException

Specified by:

visitFloatConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitFloatConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitIntConstant

public Void visitIntConstant(ValueExpressions.IntExpression intExpr,
 StringBuilder sb)
                      throws RuntimeException

Specified by:

visitIntConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitIntConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitNullConstant

public Void visitNullConstant(TypedNullConstant e,
 StringBuilder sb)
                       throws RuntimeException

Specified by:

visitNullConstant in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitNullConstant in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitNullExpression

public Void visitNullExpression(NullExpression e,
 StringBuilder sb)
                         throws RuntimeException

Specified by:

visitNullExpression in interface ExprVisitor<Void,StringBuilder,RuntimeException>

Overrides:

visitNullExpression in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>

Throws:

RuntimeException

visitUnknown

public Void visitUnknown(LogicalExpression e,
 StringBuilder sb)

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<Void,StringBuilder,RuntimeException>

Overrides:

visitUnknown in class AbstractExprVisitor<Void,StringBuilder,RuntimeException>