org.apache.calcite.sql

Interface SqlOperatorTable

All Known Subinterfaces:

Prepare.CatalogReader

All Known Implementing Classes:

CalciteCatalogReader, ChainedSqlOperatorTable, ListSqlOperatorTable, OracleSqlOperatorTable, ReflectiveSqlOperatorTable, SqlStdOperatorTable

public interface SqlOperatorTable

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

Method Summary

Modifier and Type	Method and Description
List<SqlOperator>	getOperatorList() Retrieves a list of all functions and operators in this table.
void	lookupOperatorOverloads(SqlIdentifier opName, @Nullable SqlFunctionCategory category, SqlSyntax syntax, List<SqlOperator> operatorList, SqlNameMatcher nameMatcher) Retrieves a list of operators with a given name and syntax.

Method Detail

lookupOperatorOverloads

void lookupOperatorOverloads(SqlIdentifier opName,
                             @Nullable SqlFunctionCategory category,
                             SqlSyntax syntax,
                             List<SqlOperator> operatorList,
                             SqlNameMatcher nameMatcher)

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

operatorList - mutable list to which to append matches

nameMatcher - Name matcher

getOperatorList

List<SqlOperator> getOperatorList()

Retrieves a list of all functions and operators in this table. Used for automated testing. Depending on the table type, may or may not be mutable.

Returns:

list of SqlOperator objects