Examples with CreateFunctionAlias org.h2.command.ddl.CreateFunctionAlias used on opensource projects

Example 1 with CreateFunctionAlias

use of org.h2.command.ddl.CreateFunctionAlias in project h2database by h2database.

the class Parser method parseCreateFunctionAlias.

private CreateFunctionAlias parseCreateFunctionAlias(boolean force) {
    boolean ifNotExists = readIfNotExists();
    String aliasName = readIdentifierWithSchema();
    final boolean newAliasSameNameAsBuiltin = Function.getFunction(database, aliasName) != null;
    if (database.isAllowBuiltinAliasOverride() && newAliasSameNameAsBuiltin) {
    // fine
    } else if (isKeyword(aliasName) || newAliasSameNameAsBuiltin || getAggregateType(aliasName) != null) {
        throw DbException.get(ErrorCode.FUNCTION_ALIAS_ALREADY_EXISTS_1, aliasName);
    }
    CreateFunctionAlias command = new CreateFunctionAlias(session, getSchema());
    command.setForce(force);
    command.setAliasName(aliasName);
    command.setIfNotExists(ifNotExists);
    command.setDeterministic(readIf("DETERMINISTIC"));
    command.setBufferResultSetToLocalTemp(!readIf("NOBUFFER"));
    if (readIf("AS")) {
        command.setSource(readString());
    } else {
        read("FOR");
        command.setJavaClassMethod(readUniqueIdentifier());
    }
    return command;
}