com.hardcode.gdbms.engine.customQuery
Interface CustomQuery

public interface CustomQuery

Interface to implement by the custom queries

Author:

Fernando González Cortés

Method Summary

OperationDataSource	evaluate(DataSource[] tables, Expression[] values) Executes the custom query
java.lang.String	getName() Gets the query name.

Method Detail

evaluate

OperationDataSource evaluate(DataSource[] tables,
                             Expression[] values)
                             throws ExecutionException

Executes the custom query

Parameters:

tables - tables involved in the query

values - values passed to the query

Returns:

DataSource result of the query

Throws:

ExecutionException - if the custom query execution fails

getName

java.lang.String getName()

Gets the query name. Must ve a valid SQL identifier (i.e.: '.' is not allowed)

Returns:

query name