com.espertech.esper.epl.expression.table

Class ExprTableAccessNodeTopLevel

java.lang.Object

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

com.espertech.esper.epl.expression.table.ExprTableAccessNode

com.espertech.esper.epl.expression.table.ExprTableAccessNodeTopLevel

All Implemented Interfaces:

ExprEvaluator, ExprForge, ExprNode, ExprNodeRenderable, ExprTypableReturnEval, ExprTypableReturnForge, ExprValidator, MetaDefItem, Serializable

public class ExprTableAccessNodeTopLevel
extends ExprTableAccessNode
implements ExprTypableReturnForge, ExprTypableReturnEval, ExprForge

See Also:

Serialized Form

Field Summary

Fields inherited from class com.espertech.esper.epl.expression.table.ExprTableAccessNode

groupKeyEvaluators, strategy, tableName

Constructor Summary

Constructors

Constructor and Description
ExprTableAccessNodeTopLevel(String tableName)

Method Summary

Modifier and Type	Method and Description
protected boolean	equalsNodeInternal(ExprTableAccessNode other)
Object	evaluate(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext) Evaluate event tuple and return result.
CodegenExpression	evaluateCodegen(CodegenParamSetExprPremade params, CodegenContext context)
Object[][]	evaluateTypableMulti(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
CodegenExpression	evaluateTypableMultiCodegen(CodegenParamSetExprPremade params, CodegenContext context)
Object[]	evaluateTypableSingle(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
CodegenExpression	evaluateTypableSingleCodegen(CodegenParamSetExprPremade params, CodegenContext context)
ExprForgeComplexityEnum	getComplexity()
Class	getEvaluationType()
ExprEvaluator	getExprEvaluator()
ExprForge	getForge()
LinkedHashMap<String,Object>	getRowProperties() Return null to indicate no row-type result available, or a map of property names and types to indicate a row-type result is available.
ExprTypableReturnEval	getTypableReturnEvaluator()
Boolean	isMultirow() Return true for multi-row return, return false for return of single row only
void	setStrategy(ExprTableAccessEvalStrategy strategy)
void	toPrecedenceFreeEPL(StringWriter writer)
protected void	validateBindingInternal(ExprValidationContext validationContext, TableMetadata tableMetadata)

Methods inherited from class com.espertech.esper.epl.expression.table.ExprTableAccessNode

equalsNode, getForgeRenderable, getGroupKeyEvaluators, getPrecedence, getTableName, hashCode, isConstantResult, toPrecedenceFreeEPLInternal, toPrecedenceFreeEPLInternal, validate, validateGroupKeys, validateSubpropertyGetCol

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

accept, accept, acceptChildnodes, addChildNode, addChildNodes, addChildNodeToFront, getChildNodes, replaceUnlistedChildNode, setChildNode, setChildNodes, toEPL

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.espertech.esper.epl.expression.core.ExprForge

getForgeRenderable

Constructor Detail

ExprTableAccessNodeTopLevel

public ExprTableAccessNodeTopLevel(String tableName)

Method Detail

setStrategy

public void setStrategy(ExprTableAccessEvalStrategy strategy)

Overrides:

setStrategy in class ExprTableAccessNode

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprForge

getTypableReturnEvaluator

public ExprTypableReturnEval getTypableReturnEvaluator()

Specified by:

getTypableReturnEvaluator in interface ExprTypableReturnForge

evaluateTypableMultiCodegen

public CodegenExpression evaluateTypableMultiCodegen(CodegenParamSetExprPremade params,
                                                     CodegenContext context)

Specified by:

evaluateTypableMultiCodegen in interface ExprTypableReturnForge

validateBindingInternal

protected void validateBindingInternal(ExprValidationContext validationContext,
                                       TableMetadata tableMetadata)
                                throws ExprValidationException

Specified by:

validateBindingInternal in class ExprTableAccessNode

Throws:

ExprValidationException

evaluate

public Object evaluate(EventBean[] eventsPerStream,
                       boolean isNewData,
                       ExprEvaluatorContext exprEvaluatorContext)

Description copied from interface: ExprEvaluator

Evaluate event tuple and return result.

Specified by:

evaluate in interface ExprEvaluator

Parameters:

eventsPerStream - - event tuple

isNewData - - indicates whether we are dealing with new data (istream) or old data (rstream)

exprEvaluatorContext - context for expression evaluation

Returns:

evaluation result, a boolean value for OR/AND-type evalution nodes.

evaluateCodegen

public CodegenExpression evaluateCodegen(CodegenParamSetExprPremade params,
                                         CodegenContext context)

Specified by:

evaluateCodegen in interface ExprForge

getComplexity

public ExprForgeComplexityEnum getComplexity()

Specified by:

getComplexity in interface ExprForge

getEvaluationType

public Class getEvaluationType()

Specified by:

getEvaluationType in interface ExprForge

getForge

public ExprForge getForge()

Specified by:

getForge in interface ExprNode

getRowProperties

public LinkedHashMap<String,Object> getRowProperties()
                                              throws ExprValidationException

Description copied from interface: ExprTypableReturnForge

Return null to indicate no row-type result available, or a map of property names and types to indicate a row-type result is available.

Specified by:

getRowProperties in interface ExprTypableReturnForge

Returns:

map of property names and types or null

Throws:

ExprValidationException - if the expression is invalid

isMultirow

public Boolean isMultirow()

Description copied from interface: ExprTypableReturnForge

Return true for multi-row return, return false for return of single row only

Specified by:

isMultirow in interface ExprTypableReturnForge

Returns:

multi-row flag

evaluateTypableSingle

public Object[] evaluateTypableSingle(EventBean[] eventsPerStream,
                                      boolean isNewData,
                                      ExprEvaluatorContext context)

Specified by:

evaluateTypableSingle in interface ExprTypableReturnEval

evaluateTypableSingleCodegen

public CodegenExpression evaluateTypableSingleCodegen(CodegenParamSetExprPremade params,
                                                      CodegenContext context)

Specified by:

evaluateTypableSingleCodegen in interface ExprTypableReturnForge

evaluateTypableMulti

public Object[][] evaluateTypableMulti(EventBean[] eventsPerStream,
                                       boolean isNewData,
                                       ExprEvaluatorContext context)

Specified by:

evaluateTypableMulti in interface ExprTypableReturnEval

toPrecedenceFreeEPL

public void toPrecedenceFreeEPL(StringWriter writer)

Specified by:

toPrecedenceFreeEPL in class ExprNodeBase

equalsNodeInternal

protected boolean equalsNodeInternal(ExprTableAccessNode other)

Specified by:

equalsNodeInternal in class ExprTableAccessNode