Package org.yamcs.yarch.streamsql.funct

Class CountExpression

java.lang.Object

org.yamcs.yarch.streamsql.Expression

org.yamcs.yarch.streamsql.AggregateExpression

org.yamcs.yarch.streamsql.CompilableAggregateExpression

org.yamcs.yarch.streamsql.funct.CountExpression

public class CountExpression
extends CompilableAggregateExpression

Field Summary

Fields inherited from class org.yamcs.yarch.streamsql.Expression

children, constantValue, hasAggregates, inputDef, type

Constructor Summary

Constructors

Constructor	Description
CountExpression(Expression[] args, boolean star)

Method Summary

Modifier and Type	Method	Description
protected void	aggregateFillCode_clear(StringBuilder code)
protected void	aggregateFillCode_Declarations(StringBuilder code)
protected void	aggregateFillCode_getValue(StringBuilder code)
protected void	aggregateFillCode_newData(StringBuilder code)
protected void	doBind()

Methods inherited from class org.yamcs.yarch.streamsql.CompilableAggregateExpression

collectRequiredInputs, getCompiledAggregate

Methods inherited from class org.yamcs.yarch.streamsql.AggregateExpression

bind, bindAggregate, compile, fillCode_getValueReturn, isAggregate

Methods inherited from class org.yamcs.yarch.streamsql.Expression

addFilter, collectAggregates, fillCode_Constructor, fillCode_Declarations, fillCode_getValueBody, fillCode_InputDefVars, getColumnName, getConstantValue, getType, isConstant, setArgs, setColumnName

Methods inherited from class java.lang.Object

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

Constructor Details

CountExpression

public CountExpression(Expression[] args,
 boolean star)
                throws ParseException

Throws:

ParseException

Method Details

doBind

protected void doBind()
               throws StreamSqlException

Specified by:

doBind in class Expression

Throws:

StreamSqlException

aggregateFillCode_Declarations

protected void aggregateFillCode_Declarations(StringBuilder code)

Specified by:

aggregateFillCode_Declarations in class CompilableAggregateExpression

aggregateFillCode_clear

protected void aggregateFillCode_clear(StringBuilder code)

Specified by:

aggregateFillCode_clear in class CompilableAggregateExpression

aggregateFillCode_getValue

protected void aggregateFillCode_getValue(StringBuilder code)

Specified by:

aggregateFillCode_getValue in class CompilableAggregateExpression

aggregateFillCode_newData

protected void aggregateFillCode_newData(StringBuilder code)
                                  throws StreamSqlException

Specified by:

aggregateFillCode_newData in class CompilableAggregateExpression

Throws:

StreamSqlException