com.espertech.esper.common.internal.epl.expression.agg.accessagg

Class ExprPlugInMultiFunctionAggNode

java.lang.Object

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

com.espertech.esper.common.internal.epl.expression.agg.base.ExprAggregateNodeBase

com.espertech.esper.common.internal.epl.expression.agg.accessagg.ExprPlugInMultiFunctionAggNode

All Implemented Interfaces:

ExprAggMultiFunctionNode, ExprAggregateNode, ExprPlugInAggNodeMarker, ExprEnumerationEval, ExprEnumerationForge, ExprEvaluator, ExprForge, ExprForgeInstrumentable, ExprNode, ExprNodeRenderable, ExprValidator, Serializable

public class ExprPlugInMultiFunctionAggNode
extends ExprAggregateNodeBase
implements ExprEnumerationEval, ExprAggMultiFunctionNode, ExprPlugInAggNodeMarker

Represents a custom aggregation function in an expresson tree.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.espertech.esper.common.internal.epl.expression.agg.base.ExprAggregateNodeBase

aggregationResultFutureMemberName, column, isDistinct, optionalAggregateLocalGroupByDesc, optionalFilter, positionalParams

Constructor Summary

Constructors

Constructor and Description
ExprPlugInMultiFunctionAggNode(boolean distinct, ConfigurationCompilerPlugInAggregationMultiFunction config, AggregationMultiFunctionForge aggregationMultiFunctionForge, String functionName)

Method Summary

Modifier and Type	Method and Description
protected boolean	equalsNodeAggregateMethodOnly(ExprAggregateNode node) Return true if a expression aggregate node semantically equals the current node, or false if not.
EventBean	evaluateGetEventBean(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
CodegenExpression	evaluateGetEventBeanCodegen(CodegenMethodScope parent, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
Collection<EventBean>	evaluateGetROCollectionEvents(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
CodegenExpression	evaluateGetROCollectionEventsCodegen(CodegenMethodScope parent, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
Collection	evaluateGetROCollectionScalar(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext context)
CodegenExpression	evaluateGetROCollectionScalarCodegen(CodegenMethodScope parent, ExprForgeCodegenSymbol exprSymbol, CodegenClassScope codegenClassScope)
String	getAggregationFunctionName() Returns the aggregation function name for representation in a generate expression string.
Class	getComponentTypeCollection()
EventType	getEventTypeCollection(StatementRawInfo statementRawInfo, StatementCompileTimeServices compileTimeServices)
EventType	getEventTypeSingle(StatementRawInfo statementRawInfo, StatementCompileTimeServices compileTimeServices)
ExprEnumerationEval	getExprEvaluatorEnumeration()
protected boolean	isFilterExpressionAsLastParameter()
protected AggregationForgeFactory	validateAggregationChild(ExprValidationContext validationContext) Gives the aggregation node a chance to validate the sub-expression types.
AggregationTableReadDesc	validateAggregationTableRead(ExprValidationContext validationContext, TableMetadataColumnAggregation tableAccessColumn, TableMetaData table)

Methods inherited from class com.espertech.esper.common.internal.epl.expression.agg.base.ExprAggregateNodeBase

equalsNode, evaluate, evaluateCodegen, evaluateCodegenUninstrumented, getAggFuture, getColumn, getEvaluationType, getExprEvaluator, getFactory, getForge, getForgeConstantType, getForgeRenderable, getOptionalFilter, getOptionalLocalGroupBy, getPositionalParams, getPrecedence, isConstantResult, isDistinct, isExprTextWildcardWhenNoParams, makeExceptionExpectedParamNum, setColumn, toPrecedenceFreeEPL, validate, validateFilter, validateNumericChildAllowFilter, validatePositionals

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

accept, accept, acceptChildnodes, 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

Methods inherited from interface com.espertech.esper.common.internal.epl.expression.agg.accessagg.ExprAggMultiFunctionNode

validatePositionals

Methods inherited from interface com.espertech.esper.common.internal.epl.expression.core.ExprEnumerationForge

getForgeRenderable

Methods inherited from interface com.espertech.esper.common.internal.epl.expression.core.ExprNode

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

Methods inherited from interface com.espertech.esper.common.internal.epl.expression.core.ExprNodeRenderable

toEPL

Constructor Detail

ExprPlugInMultiFunctionAggNode

public ExprPlugInMultiFunctionAggNode(boolean distinct,
                                      ConfigurationCompilerPlugInAggregationMultiFunction config,
                                      AggregationMultiFunctionForge aggregationMultiFunctionForge,
                                      String functionName)

Method Detail

validateAggregationChild

protected AggregationForgeFactory validateAggregationChild(ExprValidationContext validationContext)
                                                    throws ExprValidationException

Description copied from class: ExprAggregateNodeBase

Gives the aggregation node a chance to validate the sub-expression types.

Specified by:

validateAggregationChild in class ExprAggregateNodeBase

Parameters:

validationContext - validation information

Returns:

aggregation function factory to use

Throws:

ExprValidationException - when expression validation failed

validateAggregationTableRead

public AggregationTableReadDesc validateAggregationTableRead(ExprValidationContext validationContext,
                                                             TableMetadataColumnAggregation tableAccessColumn,
                                                             TableMetaData table)
                                                      throws ExprValidationException

Specified by:

validateAggregationTableRead in interface ExprAggMultiFunctionNode

Throws:

ExprValidationException

getAggregationFunctionName

public String getAggregationFunctionName()

Description copied from class: ExprAggregateNodeBase

Returns the aggregation function name for representation in a generate expression string.

Specified by:

getAggregationFunctionName in class ExprAggregateNodeBase

Returns:

aggregation function name

isFilterExpressionAsLastParameter

protected boolean isFilterExpressionAsLastParameter()

Specified by:

isFilterExpressionAsLastParameter in class ExprAggregateNodeBase

equalsNodeAggregateMethodOnly

protected boolean equalsNodeAggregateMethodOnly(ExprAggregateNode node)

Description copied from class: ExprAggregateNodeBase

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

For use by the equalsNode implementation which compares the distinct flag.

Specified by:

equalsNodeAggregateMethodOnly in class ExprAggregateNodeBase

Parameters:

node - to compare to

Returns:

true if semantically equal, or false if not equals

getComponentTypeCollection

public Class 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

evaluateGetROCollectionEvents

public Collection<EventBean> evaluateGetROCollectionEvents(EventBean[] eventsPerStream,
                                                           boolean isNewData,
                                                           ExprEvaluatorContext context)

Specified by:

evaluateGetROCollectionEvents in interface ExprEnumerationEval

evaluateGetROCollectionScalar

public Collection evaluateGetROCollectionScalar(EventBean[] eventsPerStream,
                                                boolean isNewData,
                                                ExprEvaluatorContext context)

Specified by:

evaluateGetROCollectionScalar in interface ExprEnumerationEval

evaluateGetEventBean

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

Specified by:

evaluateGetEventBean in interface ExprEnumerationEval

evaluateGetROCollectionEventsCodegen

public CodegenExpression evaluateGetROCollectionEventsCodegen(CodegenMethodScope parent,
                                                              ExprForgeCodegenSymbol exprSymbol,
                                                              CodegenClassScope codegenClassScope)

Specified by:

evaluateGetROCollectionEventsCodegen in interface ExprEnumerationForge

evaluateGetROCollectionScalarCodegen

public CodegenExpression evaluateGetROCollectionScalarCodegen(CodegenMethodScope parent,
                                                              ExprForgeCodegenSymbol exprSymbol,
                                                              CodegenClassScope codegenClassScope)

Specified by:

evaluateGetROCollectionScalarCodegen in interface ExprEnumerationForge

evaluateGetEventBeanCodegen

public CodegenExpression evaluateGetEventBeanCodegen(CodegenMethodScope parent,
                                                     ExprForgeCodegenSymbol exprSymbol,
                                                     CodegenClassScope codegenClassScope)

Specified by:

evaluateGetEventBeanCodegen in interface ExprEnumerationForge

getExprEvaluatorEnumeration

public ExprEnumerationEval getExprEvaluatorEnumeration()

Specified by:

getExprEvaluatorEnumeration in interface ExprEnumerationForge