java.lang.Object

io.substrait.expression.AbstractExpressionVisitor<O,C,E>

Type Parameters:: O - the visit result type; C - the visitation context type; E - the checked exception type thrown during visitation

All Implemented Interfaces:: ExpressionVisitor<O,C,E>

public abstract class AbstractExpressionVisitor<O,C extends VisitationContext,E extends Exception> extends Object implements ExpressionVisitor<O,C,E>

Base expression visitor that routes all visits to a fallback handler. Subclasses can override specific visit methods as needed.

Constructor Summary

Constructors

Constructor

Description

AbstractExpressionVisitor()
Method Summary

Modifier and Type

Method

Description

O

visit(Expression.BinaryLiteral expr, C context)

Visits a binary literal.

O

visit(Expression.BoolLiteral expr, C context)

Visits a boolean literal.

O

visit(Expression.Cast expr, C context)

Visits a cast expression.

O

visit(Expression.DateLiteral expr, C context)

Visits a date literal.

O

visit(Expression.DecimalLiteral expr, C context)

Visits a decimal literal.

O

visit(Expression.EmptyListLiteral expr, C context)

Visits an empty list literal.

O

visit(Expression.EmptyMapLiteral expr, C context)

Visits an empty map literal.

O

visit(Expression.FixedBinaryLiteral expr, C context)

Visits a fixed-length binary literal.

O

visit(Expression.FixedCharLiteral expr, C context)

Visits a fixed-length character literal.

O

visit(Expression.FP32Literal expr, C context)

Visits a 32-bit floating-point literal.

O

visit(Expression.FP64Literal expr, C context)

Visits a 64-bit floating-point literal.

O

visit(Expression.I16Literal expr, C context)

Visits a 16-bit integer literal.

O

visit(Expression.I32Literal expr, C context)

Visits a 32-bit integer literal.

O

visit(Expression.I64Literal expr, C context)

Visits a 64-bit integer literal.

O

visit(Expression.I8Literal expr, C context)

Visits an 8-bit integer literal.

O

visit(Expression.IfThen expr, C context)

Visits an if-then expression.

O

visit(Expression.InPredicate expr, C context)

Visits an IN predicate.

O

visit(Expression.IntervalCompoundLiteral expr, C context)

Visits a compound interval literal.

O

visit(Expression.IntervalDayLiteral expr, C context)

Visits an interval (days/time) literal.

O

visit(Expression.IntervalYearLiteral expr, C context)

Visits an interval (years/months) literal.

O

visit(Expression.Lambda expr, C context)

Visits a Lambda expression.

O

visit(Expression.ListLiteral expr, C context)

Visits a list literal.

O

visit(Expression.MapLiteral expr, C context)

Visits a map literal.

O

visit(Expression.MultiOrList expr, C context)

Visits a multi-or-list expression.

O

visit(Expression.NestedList expr, C context)

Visits a nested list expression.

O

visit(Expression.NestedStruct expr, C context)

Visit a nested struct.

O

visit(Expression.NullLiteral expr, C context)

Visits a null literal.

O

visit(Expression.PrecisionTimeLiteral expr, C context)

Visits a precision time literal.

O

visit(Expression.PrecisionTimestampLiteral expr, C context)

Visits a precision timestamp literal.

O

visit(Expression.PrecisionTimestampTZLiteral expr, C context)

Visits a precision timestamp-with-time-zone literal.

O

visit(Expression.ScalarFunctionInvocation expr, C context)

Visits a scalar function invocation.

O

visit(Expression.ScalarSubquery expr, C context)

Visits a scalar subquery.

O

visit(Expression.SetPredicate expr, C context)

Visits a set predicate.

O

visit(Expression.SingleOrList expr, C context)

Visits a single-or-list expression.

O

visit(Expression.StrLiteral expr, C context)

Visits a string literal.

O

visit(Expression.StructLiteral expr, C context)

Visits a struct literal.

O

visit(Expression.Switch expr, C context)

Visits a switch expression.

O

visit(Expression.TimeLiteral expr, C context)

Visits a time literal.

O

visit(Expression.TimestampLiteral expr, C context)

Visits a timestamp literal.

O

visit(Expression.TimestampTZLiteral expr, C context)

Visits a timestamp-with-time-zone literal.

O

visit(Expression.UserDefinedAnyLiteral expr, C context)

Visits a nested struct expression.

O

visit(Expression.UserDefinedStructLiteral expr, C context)

Visit a user-defined struct literal.

O

visit(Expression.UUIDLiteral expr, C context)

Visits a UUID literal.

O

visit(Expression.VarCharLiteral expr, C context)

Visits a variable-length character literal.

O

visit(Expression.WindowFunctionInvocation expr, C context)

Visits a window function invocation.

O

visit(FieldReference expr, C context)

Visits a field reference.

abstract O

visitFallback(Expression expr, C context)

Fallback handler for expressions not explicitly overridden.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- AbstractExpressionVisitor
  
  public AbstractExpressionVisitor()
Method Details
- visitFallback
  
  public abstract O visitFallback(Expression expr, C context)
  
  Fallback handler for expressions not explicitly overridden.
  
  Parameters:
  
  expr - the expression to visit
  
  context - the visitation context
  
  Returns:
  
  the visit result
- visit
  
  public O visit(Expression.NullLiteral expr, C context) throws E
  
  Visits a null literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the null literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.BoolLiteral expr, C context) throws E
  
  Visits a boolean literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the boolean literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.I8Literal expr, C context) throws E
  
  Visits an 8-bit integer literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the I8 literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.I16Literal expr, C context) throws E
  
  Visits a 16-bit integer literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the I16 literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.I32Literal expr, C context) throws E
  
  Visits a 32-bit integer literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the I32 literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.I64Literal expr, C context) throws E
  
  Visits a 64-bit integer literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the I64 literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.FP32Literal expr, C context) throws E
  
  Visits a 32-bit floating-point literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the FP32 literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.FP64Literal expr, C context) throws E
  
  Visits a 64-bit floating-point literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the FP64 literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.StrLiteral expr, C context) throws E
  
  Visits a string literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the string literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.BinaryLiteral expr, C context) throws E
  
  Visits a binary literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the binary literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.TimeLiteral expr, C context) throws E
  
  Visits a time literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the time literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.PrecisionTimeLiteral expr, C context) throws E
  
  Visits a precision time literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the precision time literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.DateLiteral expr, C context) throws E
  
  Visits a date literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the date literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.TimestampLiteral expr, C context) throws E
  
  Visits a timestamp literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the timestamp literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.TimestampTZLiteral expr, C context) throws E
  
  Visits a timestamp-with-time-zone literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the timestamp TZ literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.PrecisionTimestampLiteral expr, C context) throws E
  
  Visits a precision timestamp literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the precision timestamp literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.PrecisionTimestampTZLiteral expr, C context) throws E
  
  Visits a precision timestamp-with-time-zone literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the precision timestamp TZ literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.IntervalYearLiteral expr, C context) throws E
  
  Visits an interval (years/months) literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the year interval literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.IntervalDayLiteral expr, C context) throws E
  
  Visits an interval (days/time) literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the day interval literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.IntervalCompoundLiteral expr, C context) throws E
  
  Visits a compound interval literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the compound interval literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.UUIDLiteral expr, C context) throws E
  
  Visits a UUID literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the UUID literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.FixedCharLiteral expr, C context) throws E
  
  Visits a fixed-length character literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the fixed char literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.VarCharLiteral expr, C context) throws E
  
  Visits a variable-length character literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the varchar literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.FixedBinaryLiteral expr, C context) throws E
  
  Visits a fixed-length binary literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the fixed binary literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.DecimalLiteral expr, C context) throws E
  
  Visits a decimal literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the decimal literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.MapLiteral expr, C context) throws E
  
  Visits a map literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the map literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.EmptyMapLiteral expr, C context) throws E
  
  Visits an empty map literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the empty map literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.ListLiteral expr, C context) throws E
  
  Visits a list literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the list literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.EmptyListLiteral expr, C context) throws E
  
  Visits an empty list literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the empty list literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.StructLiteral expr, C context) throws E
  
  Visits a struct literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the struct literal
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.UserDefinedAnyLiteral expr, C context) throws E
  
  Visits a nested struct expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the nested struct
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.UserDefinedStructLiteral expr, C context) throws E
  
  Description copied from interface: ExpressionVisitor
  
  Visit a user-defined struct literal.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the user-defined literal
  
  context - visitation context
  
  Returns:
  
  visit result
  
  Throws:
  
  E - on visit failure
- visit
  
  public O visit(Expression.NestedStruct expr, C context) throws E
  
  Description copied from interface: ExpressionVisitor
  
  Visit a nested struct.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the nested struct
  
  context - visitation context
  
  Returns:
  
  visit result
  
  Throws:
  
  E - on visit failure
- visit
  
  public O visit(Expression.Switch expr, C context) throws E
  
  Visits a switch expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the switch expression
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.IfThen expr, C context) throws E
  
  Visits an if-then expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the if-then expression
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.Lambda expr, C context) throws E
  
  Visits a Lambda expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the Lambda expression
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.ScalarFunctionInvocation expr, C context) throws E
  
  Visits a scalar function invocation.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the scalar function invocation
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.WindowFunctionInvocation expr, C context) throws E
  
  Visits a window function invocation.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the window function invocation
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.Cast expr, C context) throws E
  
  Visits a cast expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the cast expression
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.SingleOrList expr, C context) throws E
  
  Visits a single-or-list expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the single-or-list
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.MultiOrList expr, C context) throws E
  
  Visits a multi-or-list expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the multi-or-list
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.NestedList expr, C context) throws E
  
  Visits a nested list expression.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the nested list
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(FieldReference expr, C context) throws E
  
  Visits a field reference.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the field reference
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.SetPredicate expr, C context) throws E
  
  Visits a set predicate.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the set predicate
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.ScalarSubquery expr, C context) throws E
  
  Visits a scalar subquery.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the scalar subquery
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails
- visit
  
  public O visit(Expression.InPredicate expr, C context) throws E
  
  Visits an IN predicate.
  
  Specified by:
  
  visit in interface ExpressionVisitor<O,C extends VisitationContext,E extends Exception>
  
  Parameters:
  
  expr - the IN predicate
  
  context - the visitation context
  
  Returns:
  
  the visit result
  
  Throws:
  
  E - if visitation fails

Class AbstractExpressionVisitor<O,C extends VisitationContext,E extends Exception>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Details

AbstractExpressionVisitor

Method Details

visitFallback

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit

visit