Package com.yahoo.vespa.indexinglanguage.expressions

Class CatExpression

java.lang.Object

com.yahoo.vespa.objects.Selectable

com.yahoo.vespa.indexinglanguage.expressions.Expression

com.yahoo.vespa.indexinglanguage.expressions.CompositeExpression

com.yahoo.vespa.indexinglanguage.expressions.ExpressionList<Expression>

com.yahoo.vespa.indexinglanguage.expressions.CatExpression

All Implemented Interfaces:

Iterable<Expression>

public final class CatExpression
extends ExpressionList<Expression>

Author:

Simon Thoresen Hult

Constructor Summary

Constructors

Constructor	Description
CatExpression(Expression... expressions)
CatExpression(Collection<? extends Expression> expressions)

Method Summary

Modifier and Type	Method	Description
CatExpression	convertChildren(ExpressionConverter converter)	Returns an expression where the children of this has been converted using the given converter.
protected void	doExecute(ExecutionContext context)
boolean	equals(Object obj)
boolean	requiresInput()	Returns whether this expression requires an input value.
com.yahoo.document.DataType	setInputType(com.yahoo.document.DataType inputType, TypeContext context)	Sets the input type of this and returns the resulting output type, or null if it cannot be uniquely determined.
com.yahoo.document.DataType	setOutputType(com.yahoo.document.DataType outputType, TypeContext context)	Sets the output type of this and returns the resulting input type, or null if it cannot be uniquely determined.
String	toString()

Methods inherited from class com.yahoo.vespa.indexinglanguage.expressions.ExpressionList

asList, convertChildList, expressions, get, hashCode, isEmpty, iterator, selectMembers, setStatementOutput, size

Methods inherited from class com.yahoo.vespa.indexinglanguage.expressions.CompositeExpression

toScriptBlock

Methods inherited from class com.yahoo.vespa.indexinglanguage.expressions.Expression

doResolve, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, fromString, fromString, getInputType, getOutputType, getOutputType, isMutating, leastGeneralNonNullOf, leastGeneralOf, mostGeneralOf, newInstance, requireOutputType, resolve, resolve, resolve, resolve, resolve, resolve, resolve, resolve, resolve, setInputType, setOutputType

Methods inherited from class com.yahoo.vespa.objects.Selectable

select, select

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

CatExpression

public CatExpression(Expression... expressions)

CatExpression

public CatExpression(Collection<? extends Expression> expressions)

Method Details

requiresInput

public boolean requiresInput()

Description copied from class: Expression

Returns whether this expression requires an input value.

Overrides:

requiresInput in class ExpressionList<Expression>

convertChildren

public CatExpression convertChildren(ExpressionConverter converter)

Description copied from class: Expression

Returns an expression where the children of this has been converted using the given converter. This default implementation returns this as it has no children.

Specified by:

convertChildren in class CompositeExpression

setInputType

public com.yahoo.document.DataType setInputType(com.yahoo.document.DataType inputType,
 TypeContext context)

Description copied from class: Expression

Sets the input type of this and returns the resulting output type, or null if it cannot be uniquely determined. Subtypes may implement this by calling setInputType(inputType, requiredType, VerificationContext context).

Overrides:

setInputType in class Expression

setOutputType

public com.yahoo.document.DataType setOutputType(com.yahoo.document.DataType outputType,
 TypeContext context)

Description copied from class: Expression

Sets the output type of this and returns the resulting input type, or null if it cannot be uniquely determined. Subtypes implement this by calling setOutputType(outputType, requiredType, VerificationContext context).

Overrides:

setOutputType in class Expression

doExecute

protected void doExecute(ExecutionContext context)

Specified by:

doExecute in class Expression

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class ExpressionList<Expression>