org.eigenbase.sql
Interface SqlOperatorTable

All Known Implementing Classes:

ChainedSqlOperatorTable, FarragoRngOperatorTable, FarragoUserDefinedRoutineLookup, ListSqlOperatorTable, LucidDbOperatorTable, MockSqlOperatorTable, ReflectiveSqlOperatorTable, SqlStdOperatorTable

public interface SqlOperatorTable

SqlOperatorTable defines a directory interface for enumerating and looking up SQL operators and functions.

Method Summary

List<SqlOperator>	getOperatorList() Retrieves a list of all functions and operators in this table.
List<SqlOperator>	lookupOperatorOverloads(SqlIdentifier opName, SqlFunctionCategory category, SqlSyntax syntax) Retrieves a list of operators with a given name and syntax.

Method Detail

lookupOperatorOverloads

List<SqlOperator> lookupOperatorOverloads(SqlIdentifier opName,
                                          SqlFunctionCategory category,
                                          SqlSyntax syntax)

Retrieves a list of operators with a given name and syntax. For example, by passing SqlSyntax.Function, the returned list is narrowed to only matching SqlFunction objects.

Parameters:

opName - name of operator

category - function category to look up, or null for any matching operator

syntax - syntax type of operator

Returns:

mutable list of SqlOperator objects (or immutable empty list if no matches)

getOperatorList

List<SqlOperator> getOperatorList()

Retrieves a list of all functions and operators in this table. Used for automated testing.

Returns:

list of SqlOperator objects