Package com.yahoo.vespa.indexinglanguage.expressions

Class ScriptExpression

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<StatementExpression>

com.yahoo.vespa.indexinglanguage.expressions.ScriptExpression

All Implemented Interfaces:

Iterable<StatementExpression>

public final class ScriptExpression
extends ExpressionList<StatementExpression>

Author:

Simon Thoresen Hult

Constructor Summary

Constructors

Constructor	Description
ScriptExpression()
ScriptExpression(StatementExpression... statements)
ScriptExpression(Collection<? extends StatementExpression> statements)

Method Summary

Modifier and Type	Method	Description
ScriptExpression	convertChildren(ExpressionConverter converter)	Returns an expression where the children of this has been converted using the given converter.
protected void	doExecute(ExecutionContext context)
protected void	doResolve(TypeContext context)
boolean	equals(Object obj)
static ScriptExpression	fromString(String expression)	Creates an expression with simple linguistics for testing
static ScriptExpression	fromString(String expression, com.yahoo.language.Linguistics linguistics, Map<String,com.yahoo.language.process.Chunker> chunkers, Map<String,com.yahoo.language.process.Embedder> embedders, Map<String,com.yahoo.language.process.FieldGenerator> generators)
boolean	isMutating()	Returns whether this expression outputs a different value than what it gets as input.
static ScriptExpression	newInstance(ScriptParserContext config)
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

execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, execute, getInputType, getOutputType, getOutputType, leastGeneralNonNullOf, leastGeneralOf, mostGeneralOf, 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

ScriptExpression

public ScriptExpression()

ScriptExpression

public ScriptExpression(StatementExpression... statements)

ScriptExpression

public ScriptExpression(Collection<? extends StatementExpression> statements)

Method Details

convertChildren

public ScriptExpression 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

isMutating

public boolean isMutating()

Description copied from class: Expression

Returns whether this expression outputs a different value than what it gets as input. Annotating a string value does not count as modifying it.

Overrides:

isMutating in class Expression

requiresInput

public boolean requiresInput()

Description copied from class: Expression

Returns whether this expression requires an input value.

Overrides:

requiresInput in class ExpressionList<StatementExpression>

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

doResolve

protected void doResolve(TypeContext context)

Overrides:

doResolve 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<StatementExpression>

fromString

public static ScriptExpression fromString(String expression)
                                   throws ParseException

Creates an expression with simple linguistics for testing

Throws:

ParseException

fromString

public static ScriptExpression fromString(String expression,
 com.yahoo.language.Linguistics linguistics,
 Map<String,com.yahoo.language.process.Chunker> chunkers,
 Map<String,com.yahoo.language.process.Embedder> embedders,
 Map<String,com.yahoo.language.process.FieldGenerator> generators)
                                   throws ParseException

Throws:

ParseException

newInstance

public static ScriptExpression newInstance(ScriptParserContext config)
                                    throws ParseException

Throws:

ParseException