RE: obtain SQL query
RE: obtain SQL query
- Subject: RE: obtain SQL query
- From: "Pierre Bernard" <email@hidden>
- Date: Mon, 18 Aug 2003 11:17:48 +0200
- Thread-topic: obtain SQL query
Hi!
Start off with this:
String entityName = fetchSpecification.entityName();
EOEntity entity = EOModelGroup.defaultGroup().entityNamed(entityName);
Class expressionClass = ((EOAdaptor) EOAdaptor.adaptorWithModel(entity.model())).expressionClass();
Constructor constructor = expressionClass.getConstructor(new Class[] { EOEntity.class });
EOSQLExpression expression = (EOSQLExpression) constructor.newInstance(new Object[] { entity });
EOQualifier qualifier = fetchSpecification.qualifier();
if (qualifier != null)
{
fetchSpecification = (EOFetchSpecification) fetchSpecification.clone();
fetchSpecification.setQualifier(entity.schemaBasedQualifier(qualifier));
}
expression.prepareSelectExpressionWithAttributes(entity.attributesToFetch(), false, fetchSpecification);
if (expression.bindVariableDictionaries() != null)
{
returnSqlString = (String) fillBindings(expression, expression.statement())
}
else
{
returnSqlString = expression.statement();
}
public static String fillBindings(EOSQLExpression expression, String sqlString)
{
String query = sqlString;
NSArray bindVariables = expression.bindVariableDictionaries();
int count = bindVariables.count();
for (int i = 0; i < count; i++)
{
NSDictionary variable = (NSDictionary) bindVariables.objectAtIndex(i);
Object value = variable.objectForKey(EOSQLExpression.BindVariableValueKey);
EOAttribute attribute = (EOAttribute) variable.objectForKey(EOSQLExpression.BindVariableAttributeKey);
String placeholder = (String) variable.objectForKey(EOSQLExpression.BindVariablePlaceHolderKey);
String replacement = formatValueForAttribute(value, attribute);
query = query.substring(0, query.indexOf(placeholder)) + replacement + query.substring(query.indexOf(placeholder) + placeholder.length());
}
return query;
}
Pierre
--
Got a hang for movies?
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-----Original Message-----
From: Alex Blaj [mailto:email@hidden]
Sent: Monday, August 18, 2003 10:06 AM
To: email@hidden
Subject: obtain SQL query
Hi there,
Does anyone know of a way to obtain the SQL query formed by the EOF before
sending it to a database?
Thanks,
Alex.
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