Package com.espertech.esper.common.internal.epl.expression.table

Class ExprTableIdentNode

java.lang.Object

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

com.espertech.esper.common.internal.epl.expression.table.ExprTableIdentNode

All Implemented Interfaces:

ExprForge, ExprForgeInstrumentable, ExprNode, ExprNodeRenderable, ExprValidator

public class ExprTableIdentNode
extends ExprNodeBase
implements ExprForgeInstrumentable

Constructor Summary

Constructors

Constructor	Description
ExprTableIdentNode(TableMetaData tableMetadata, String streamOrPropertyName, String unresolvedPropertyName, EPTypeClass returnType, int streamNum, String columnName, int columnNum)

Method Summary

Modifier and Type	Method	Description
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 parent, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
CodegenExpression	evaluateCodegenUninstrumented(EPTypeClass requiredType, CodegenMethodScope parent, ExprForgeCodegenSymbol symbols, CodegenClassScope codegenClassScope)
String	getColumnName()
int	getColumnNum()
EPTypeClass	getEvaluationType()
ExprEvaluator	getExprEvaluator()
ExprForge	getForge()
ExprForgeConstantType	getForgeConstantType()
ExprNode	getForgeRenderable()
ExprPrecedenceEnum	getPrecedence()	Returns precedence.
int	getStreamNum()
TableMetaData	getTableMetadata()
String	getUnresolvedPropertyName()
boolean	isConstantResult()
static Object	tableColumnAggValue(int streamNum, int column, EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext ctx)	NOTE: Code-generation-invoked method, method name and parameter order matters
static AggregationRow	tableColumnRow(int streamNum, EventBean[] eventsPerStream)	NOTE: Code-generation-invoked method, method name and parameter order matters
void	toPrecedenceFreeEPL(StringWriter writer, ExprNodeRenderableFlags flags)
ExprNode	validate(ExprValidationContext validationContext)

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

Constructor Details

ExprTableIdentNode

public ExprTableIdentNode(TableMetaData tableMetadata,
 String streamOrPropertyName,
 String unresolvedPropertyName,
 EPTypeClass returnType,
 int streamNum,
 String columnName,
 int columnNum)

Method Details

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

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

evaluateCodegenUninstrumented

public CodegenExpression evaluateCodegenUninstrumented(EPTypeClass requiredType,
 CodegenMethodScope parent,
 ExprForgeCodegenSymbol symbols,
 CodegenClassScope codegenClassScope)

Specified by:

evaluateCodegenUninstrumented in interface ExprForgeInstrumentable

evaluateCodegen

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

Specified by:

evaluateCodegen in interface ExprForge

getForgeConstantType

public ExprForgeConstantType getForgeConstantType()

Specified by:

getForgeConstantType in interface ExprForge

getExprEvaluator

public ExprEvaluator getExprEvaluator()

Specified by:

getExprEvaluator in interface ExprForge

getEvaluationType

public EPTypeClass getEvaluationType()

Specified by:

getEvaluationType in interface ExprForge

getForge

public ExprForge getForge()

Specified by:

getForge in interface ExprNode

getForgeRenderable

public ExprNode getForgeRenderable()

Specified by:

getForgeRenderable in interface ExprForge

getTableMetadata

public TableMetaData getTableMetadata()

getStreamNum

public int getStreamNum()

getColumnNum

public int getColumnNum()

getUnresolvedPropertyName

public String getUnresolvedPropertyName()

getColumnName

public String getColumnName()

tableColumnRow

public static AggregationRow tableColumnRow(int streamNum,
 EventBean[] eventsPerStream)

NOTE: Code-generation-invoked method, method name and parameter order matters

Parameters:

streamNum - stream num

eventsPerStream - events

Returns:

value

tableColumnAggValue

public static Object tableColumnAggValue(int streamNum,
 int column,
 EventBean[] eventsPerStream,
 boolean isNewData,
 ExprEvaluatorContext ctx)

NOTE: Code-generation-invoked method, method name and parameter order matters

Parameters:

streamNum - stream num

column - col

eventsPerStream - events

isNewData - new-data flow

ctx - context

Returns:

value