org.yamcs.yarch.streamsql

Class RelationalExpression

java.lang.Object

org.yamcs.yarch.streamsql.Expression

org.yamcs.yarch.streamsql.RelationalExpression

public class RelationalExpression
extends Expression

Expressions of type "x > y"

Author:

nm

Field Summary

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

children, constant, hasAggregates, inputDef, type

Constructor Summary

Constructors

Constructor and Description
RelationalExpression(Expression left, Expression right, RelOp relOp)

Method Summary

Modifier and Type	Method and Description
Expression	addFilter(DbReaderStream tableStream) add a filter to the table if applicable and returns an expression where the condition is removed.
void	doBind()
void	fillCode_getValueReturn(StringBuilder code)
RelOp	getRelation()
String	toString()

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

bind, collectAggregates, compile, fillCode_AllInputDefVars, fillCode_Constructor, fillCode_Declarations, fillCode_getValueBody, getColName, getType, isAggregate, isConstant

Methods inherited from class java.lang.Object

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

Constructor Detail

RelationalExpression

public RelationalExpression(Expression left,
                            Expression right,
                            RelOp relOp)
                     throws ParseException

Throws:

ParseException

Method Detail

getRelation

public RelOp getRelation()

addFilter

public Expression addFilter(DbReaderStream tableStream)
                     throws StreamSqlException

Description copied from class: Expression

add a filter to the table if applicable and returns an expression where the condition is removed.

Overrides:

addFilter in class Expression

Returns:

Throws:

StreamSqlException

doBind

public void doBind()
            throws StreamSqlException

Specified by:

doBind in class Expression

Throws:

StreamSqlException

fillCode_getValueReturn

public void fillCode_getValueReturn(StringBuilder code)
                             throws StreamSqlException

Specified by:

fillCode_getValueReturn in class Expression

Throws:

StreamSqlException

toString

public String toString()

Overrides:

toString in class Object