Package org.yamcs.yarch.streamsql

Class CompilableAggregateExpression

java.lang.Object

org.yamcs.yarch.streamsql.Expression

org.yamcs.yarch.streamsql.AggregateExpression

org.yamcs.yarch.streamsql.CompilableAggregateExpression

Direct Known Subclasses:

CountExpression, SumExpression

public abstract class CompilableAggregateExpression
extends AggregateExpression

Field Summary

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

children, constantValue, hasAggregates, inputDef, type

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
protected abstract void	aggregateFillCode_clear(StringBuilder code)
protected abstract void	aggregateFillCode_Declarations(StringBuilder code)
protected abstract void	aggregateFillCode_getValue(StringBuilder code)
protected abstract void	aggregateFillCode_newData(StringBuilder code)
void	collectRequiredInputs(Set<ColumnDefinition> inputs)
CompiledAggregateExpression	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, doBind, 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

CompilableAggregateExpression

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

Throws:

ParseException

Method Details

collectRequiredInputs

public void collectRequiredInputs(Set<ColumnDefinition> inputs)

Overrides:

collectRequiredInputs in class Expression

getCompiledAggregate

public CompiledAggregateExpression getCompiledAggregate()
                                                 throws StreamSqlException

Specified by:

getCompiledAggregate in class AggregateExpression

Throws:

StreamSqlException

aggregateFillCode_clear

protected abstract void aggregateFillCode_clear(StringBuilder code)

aggregateFillCode_getValue

protected abstract void aggregateFillCode_getValue(StringBuilder code)

aggregateFillCode_newData

protected abstract void aggregateFillCode_newData(StringBuilder code)
                                           throws StreamSqlException

Throws:

StreamSqlException

aggregateFillCode_Declarations

protected abstract void aggregateFillCode_Declarations(StringBuilder code)