com.metamatrix.query.processor.dynamic
Class SqlEval

java.lang.Object
  com.metamatrix.query.processor.dynamic.SqlEval

All Implemented Interfaces:

XQuerySQLEvaluator

public class SqlEval
extends java.lang.Object
implements XQuerySQLEvaluator

A SQL evaluator used in XQuery expression, where this will take SQL string and return a XML 'Source' as output for the request evaluated.

Constructor Summary

SqlEval(BufferManager bufferMgr, ProcessorDataManager dataManager, CommandContext context, java.lang.String parentGroup, java.util.Map<java.lang.String,Expression> params)

Method Summary

void	close() Closes any resources opened during the evaluation
javax.xml.transform.Source	executeSQL(java.lang.String sql) Execute a SQL string that returns an XML result
java.lang.Object	getParameterValue(java.lang.String key)

Methods inherited from class java.lang.Object

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

Constructor Detail

SqlEval

public SqlEval(BufferManager bufferMgr,
               ProcessorDataManager dataManager,
               CommandContext context,
               java.lang.String parentGroup,
               java.util.Map<java.lang.String,Expression> params)

Method Detail

executeSQL

public javax.xml.transform.Source executeSQL(java.lang.String sql)
                                      throws QueryParserException,
                                             MetaMatrixProcessingException,
                                             MetaMatrixComponentException

Description copied from interface: XQuerySQLEvaluator

Execute a SQL string that returns an XML result

Specified by:

executeSQL in interface XQuerySQLEvaluator

Parameters:

sql - SQL string, typically an EXEC against an xml service or virtual document

Throws:

QueryParserException - If sql parameter is not sql

MetaMatrixProcessingException - If execution of the sql fails due to a bad query

MetaMatrixComponentException - If execution of the sql fails due to an internal failure

Since:

4.3

See Also:

com.metamatrix.query.xquery.XQuerySQLEvaluator#executeDynamicSQL(java.lang.String)

getParameterValue

public java.lang.Object getParameterValue(java.lang.String key)
                                   throws ExpressionEvaluationException,
                                          BlockedException,
                                          MetaMatrixComponentException

Specified by:

getParameterValue in interface XQuerySQLEvaluator

Throws:

ExpressionEvaluationException

BlockedException

MetaMatrixComponentException

close

public void close()
           throws MetaMatrixComponentException

Closes any resources opened during the evaluation

Specified by:

close in interface XQuerySQLEvaluator

Throws:

MetaMatrixComponentException