Package com.espertech.esper.common.internal.epl.script.core

Class ExprNodeScript

java.lang.Object

com.espertech.esper.common.internal.epl.expression.core.ExprNodeBase

com.espertech.esper.common.internal.epl.script.core.ExprNodeScript

All Implemented Interfaces:

ExprEnumerationForge, ExprForge, ExprNode, ExprNodeInnerNodeProvider, ExprNodeRenderable, ExprValidator

public class ExprNodeScript
extends ExprNodeBase
implements ExprForge, ExprEnumerationForge, ExprNodeInnerNodeProvider

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CONTEXT_BINDING_NAME

Constructor Summary

Constructors

Constructor	Description
ExprNodeScript(String defaultDialect, ExpressionScriptProvided script, List<ExprNode> parameters)

Method Summary

Modifier and Type	Method	Description
void	accept(ExprNodeVisitor visitor)	Accept the visitor.
void	accept(ExprNodeVisitorWithParent visitor)	Accept the visitor.
void	acceptChildnodes(ExprNodeVisitorWithParent visitor, ExprNode parent)	Accept a visitor that receives both parent and child node.
boolean	equalsNode(ExprNode node, boolean ignoreStreamPrefix)	Return true if a expression node semantically equals the current node, or false if not.
CodegenExpression	evaluateCodegen(EPTypeClass requiredType, CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
CodegenExpression	evaluateGetEventBeanCodegen(CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
CodegenExpression	evaluateGetROCollectionEventsCodegen(CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
CodegenExpression	evaluateGetROCollectionScalarCodegen(CodegenMethodScope codegenMethodScope, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
List<ExprNode>	getAdditionalNodes()
EPTypeClass	getComponentTypeCollection()
EPTypeClass	getEvaluationType()
EventType	getEventTypeCollection(StatementRawInfo statementRawInfo, StatementCompileTimeServices compileTimeServices)
String	getEventTypeNameAnnotation()
EventType	getEventTypeSingle(StatementRawInfo statementRawInfo, StatementCompileTimeServices compileTimeServices)
ExprEvaluator	getExprEvaluator()
ExprEnumerationEval	getExprEvaluatorEnumeration()
CodegenExpressionField	getField(CodegenClassScope codegenClassScope)
ExprForge	getForge()
ExprForgeConstantType	getForgeConstantType()
ExprNodeRenderable	getForgeRenderable()
List<ExprNode>	getParameters()
ExprPrecedenceEnum	getPrecedence()	Returns precedence.
ExpressionScriptProvided	getScript()
boolean	isConstantResult()
void	toPrecedenceFreeEPL(StringWriter writer, ExprNodeRenderableFlags flags)
ExprNode	validate(ExprValidationContext validationContext)

Methods inherited from class com.espertech.esper.common.internal.epl.expression.core.ExprNodeBase

addChildNode, addChildNodes, addChildNodeToFront, checkValidated, checkValidatedException, getChildNodes, replaceUnlistedChildNode, setChildNode, setChildNodes, toEPL

Methods inherited from class java.lang.Object

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

Field Details

CONTEXT_BINDING_NAME

public static final String CONTEXT_BINDING_NAME

See Also:

• Constant Field Values

Constructor Details

ExprNodeScript

public ExprNodeScript(String defaultDialect,
 ExpressionScriptProvided script,
 List<ExprNode> parameters)

Method Details

getForge

public ExprForge getForge()

Specified by:

getForge in interface ExprNode

getAdditionalNodes

public List<ExprNode> getAdditionalNodes()

Specified by:

getAdditionalNodes in interface ExprNodeInnerNodeProvider

getParameters

public List<ExprNode> getParameters()

getEventTypeNameAnnotation

public String getEventTypeNameAnnotation()

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer,
 ExprNodeRenderableFlags flags)

Specified by:

toPrecedenceFreeEPL in class ExprNodeBase

getPrecedence

public ExprPrecedenceEnum getPrecedence()

Description copied from interface: ExprNode

Returns precedence.

Specified by:

getPrecedence in interface ExprNode

Returns:

precedence

getScript

public ExpressionScriptProvided getScript()

isConstantResult

public boolean isConstantResult()

equalsNode

public boolean equalsNode(ExprNode node,
 boolean ignoreStreamPrefix)

Description copied from interface: ExprNode

Return true if a expression node semantically equals the current node, or false if not.

Concrete implementations should compare the type and any additional information that impact the evaluation of a node.

Specified by:

equalsNode in interface ExprNode

Parameters:

node - to compare to

ignoreStreamPrefix - when the equals-comparison can ignore prefix of event properties

Returns:

true if semantically equal, or false if not equals

validate

public ExprNode validate(ExprValidationContext validationContext)
                  throws ExprValidationException

Specified by:

validate in interface ExprValidator

Throws:

ExprValidationException

accept

public void accept(ExprNodeVisitor visitor)

Description copied from interface: ExprNode

Accept the visitor. The visitor will first visit the parent then visit all child nodes, then their child nodes.

The visitor can decide to skip child nodes by returning false in isVisit.

Specified by:

accept in interface ExprNode

Overrides:

accept in class ExprNodeBase

Parameters:

visitor - to visit each node and each child node.

accept

public void accept(ExprNodeVisitorWithParent visitor)

Description copied from interface: ExprNode

Accept the visitor. The visitor will first visit the parent then visit all child nodes, then their child nodes.

The visitor can decide to skip child nodes by returning false in isVisit.

Specified by:

accept in interface ExprNode

Overrides:

accept in class ExprNodeBase

Parameters:

visitor - to visit each node and each child node.

acceptChildnodes

public void acceptChildnodes(ExprNodeVisitorWithParent visitor,
 ExprNode parent)

Description copied from interface: ExprNode

Accept a visitor that receives both parent and child node.

Specified by:

acceptChildnodes in interface ExprNode

Overrides:

acceptChildnodes in class ExprNodeBase

Parameters:

visitor - to apply

parent - node

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprForge

getEvaluationType

public EPTypeClass getEvaluationType()

Specified by:

getEvaluationType in interface ExprForge

getForgeConstantType

public ExprForgeConstantType getForgeConstantType()

Specified by:

getForgeConstantType in interface ExprForge

getForgeRenderable

public ExprNodeRenderable getForgeRenderable()

Specified by:

getForgeRenderable in interface ExprEnumerationForge

Specified by:

getForgeRenderable in interface ExprForge

getComponentTypeCollection

public EPTypeClass getComponentTypeCollection()
                                       throws ExprValidationException

Specified by:

getComponentTypeCollection in interface ExprEnumerationForge

Throws:

ExprValidationException

getEventTypeCollection

public EventType getEventTypeCollection(StatementRawInfo statementRawInfo,
 StatementCompileTimeServices compileTimeServices)
                                 throws ExprValidationException

Specified by:

getEventTypeCollection in interface ExprEnumerationForge

Throws:

ExprValidationException

getEventTypeSingle

public EventType getEventTypeSingle(StatementRawInfo statementRawInfo,
 StatementCompileTimeServices compileTimeServices)
                             throws ExprValidationException

Specified by:

getEventTypeSingle in interface ExprEnumerationForge

Throws:

ExprValidationException

evaluateCodegen

public CodegenExpression evaluateCodegen(EPTypeClass requiredType,
 CodegenMethodScope codegenMethodScope,
 ExprForgeCodegenSymbol symbols,
 CodegenClassScope codegenClassScope)

Specified by:

evaluateCodegen in interface ExprForge

evaluateGetROCollectionEventsCodegen

public CodegenExpression evaluateGetROCollectionEventsCodegen(CodegenMethodScope codegenMethodScope,
 ExprForgeCodegenSymbol symbols,
 CodegenClassScope codegenClassScope)

Specified by:

evaluateGetROCollectionEventsCodegen in interface ExprEnumerationForge

evaluateGetROCollectionScalarCodegen

public CodegenExpression evaluateGetROCollectionScalarCodegen(CodegenMethodScope codegenMethodScope,
 ExprForgeCodegenSymbol symbols,
 CodegenClassScope codegenClassScope)

Specified by:

evaluateGetROCollectionScalarCodegen in interface ExprEnumerationForge

evaluateGetEventBeanCodegen

public CodegenExpression evaluateGetEventBeanCodegen(CodegenMethodScope codegenMethodScope,
 ExprForgeCodegenSymbol symbols,
 CodegenClassScope codegenClassScope)

Specified by:

evaluateGetEventBeanCodegen in interface ExprEnumerationForge

getField

public CodegenExpressionField getField(CodegenClassScope codegenClassScope)

getExprEvaluatorEnumeration

public ExprEnumerationEval getExprEvaluatorEnumeration()

Specified by:

getExprEvaluatorEnumeration in interface ExprEnumerationForge