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package org.apache.derbyTesting.functionTests.tests.lang;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import junit.framework.Test;
import org.apache.derbyTesting.junit.BaseJDBCTestCase;
import org.apache.derbyTesting.junit.BaseTestSuite;
import org.apache.derbyTesting.junit.JDBC;
import org.apache.derbyTesting.junit.TestConfiguration;
/**
* Test for CURRENT SCHEMA and optional DB2 compatible SET SCHEMA statement
* test SET SCHEMA syntax variations syntax is:
* <p>
* <pre>
* SET [CURRENT] SCHEMA [=] (<identifier> | USER | ? | '<string>')
* SET CURRENT SQLID [=] (<identifier> | USER | ? | '<string>')
* </pre>
*/
public final class CurrentSchemaTest extends BaseJDBCTestCase {
/**
* Public constructor required for running test as standalone JUnit.
* @param name test name
*/
public CurrentSchemaTest(String name)
{
super(name);
}
public static Test suite()
{
BaseTestSuite suite = new BaseTestSuite("CurrentSchemaTest");
suite.addTest(TestConfiguration.defaultSuite(CurrentSchemaTest.class));
return suite;
}
public void testCurrentSchema() throws Exception
{
ResultSet rs;
ResultSetMetaData rsmd;
PreparedStatement pSt;
final Statement st = createStatement();
String [][] expRS;
String [] expColNames;
assertCurrentSchema(st, "APP");
st.executeUpdate("set schema sys");
assertCurrentSchema(st, "SYS");
assertStatementError("X0Y68", st, "create schema app");
st.executeUpdate("set current schema app");
assertCurrentSchema(st, "APP");
st.executeUpdate("set schema = sys");
assertCurrentSchema(st, "SYS");
st.executeUpdate("set current schema = app");
assertCurrentSchema(st, "APP");
st.executeUpdate("set schema sys");
//
// user should use default schema if no user set
//
st.executeUpdate("set schema user");
assertCurrentSchema(st, "APP");
//
// see what user does when there is a user
//
st.executeUpdate("create schema judy");
Connection judy = openUserConnection("judy");
Statement jst = judy.createStatement();
jst.executeUpdate("set schema app");
assertCurrentSchema(jst, "APP");
jst.executeUpdate("set schema user");
assertCurrentSchema(jst, "JUDY");
judy.close();
//
// check for default
//
assertCurrentSchema(st, "APP");
//
// Check that current sqlid works as a synonym
//
rs = st.executeQuery("values current sqlid");
expRS = new String [][]{{"APP"}};
JDBC.assertFullResultSet(rs, expRS, true);
//
// Check that sqlid still works as an identifer
//
st.executeUpdate("create table sqlid(sqlid int)");
st.executeUpdate("drop table sqlid");
//
// Check that set current sqlid works
//
st.executeUpdate("set current sqlid judy");
assertCurrentSchema(st, "JUDY");
//
// Check that set sqlid doesn't work (not DB2 compatible) - should get
// error
assertStatementError("42X01", st, "set sqlid judy");
//
// Change schema and make sure that the current schema is correct
//
st.executeUpdate("set schema sys");
assertCurrentSchema(st, "SYS");
st.executeUpdate("set schema app");
//
// Try using ? outside of a prepared statement
//
assertStatementError("07000", st, "set schema ?");
//
// Use set schema in a prepared statement
//
setAutoCommit(false);
pSt = prepareStatement("set schema ?");
//
// Should get error with no parameters
//
assertStatementError("07000", pSt);
//
// Should get error if null is used
//
st.executeUpdate("create table t1(name varchar(128))");
st.executeUpdate("insert into t1 values(null)");
rs = st.executeQuery("select name from t1");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertStatementError("42815", pSt);
//
// Should get error if schema doesn't exist
//
rs = st.executeQuery("values('notthere')");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertStatementError("42Y07", pSt);
//
// Should error with empty string
//
rs = st.executeQuery("values('')");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertStatementError("42Y07", pSt);
//
// Should get error if wrong case used
//
rs = st.executeQuery("values('sys')");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertStatementError("42Y07", pSt);
//
// Should get error if too many parameters
//
rs = st.executeQuery("values('sys','app')");
rs.next();
rsmd = rs.getMetaData();
try {
for (int i = 1; i <= rsmd.getColumnCount(); i++) {
pSt.setObject(i, rs.getObject(i));
}
} catch (SQLException e) {
if (usingDerbyNetClient()) {
assertSQLState("XCL14", e);
} else {
assertSQLState("XCL13", e);
}
}
//
// USER should return an error as it is interpreted as a
// string constant not an identifier
//
rs = st.executeQuery("values('USER')");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertStatementError("42Y07", pSt);
//
// Try positive test
//
rs = st.executeQuery("values('SYS')");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertUpdateCount(pSt, 0);
assertCurrentSchema(st, "SYS");
rollback();
setAutoCommit(true);
//
// Try current schema in a number of statements types
//
st.executeUpdate("set schema app");
st.executeUpdate("create table t1 ( a varchar(128))");
//
// insert
//
st.executeUpdate("insert into t1 values (current schema)");
rs = st.executeQuery("select * from t1");
expColNames = new String [] {"A"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]{{"APP"}};
JDBC.assertFullResultSet(rs, expRS, true);
st.executeUpdate("set schema judy");
st.executeUpdate("insert into app.t1 values (current schema)");
rs = st.executeQuery("select * from app.t1");
expColNames = new String [] {"A"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]
{
{"APP"},
{"JUDY"}
};
JDBC.assertFullResultSet(rs, expRS, true);
//
// delete where clause
//
assertUpdateCount(st, 1,"delete from app.t1 where a = current schema");
rs = st.executeQuery("select * from app.t1");
expColNames = new String [] {"A"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]
{
{"APP"}
};
JDBC.assertFullResultSet(rs, expRS, true);
st.executeUpdate("set current schema app");
//
// Target list
//
rs = st.executeQuery("select current schema from t1");
expColNames = new String [] {"1"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]
{
{"APP"}
};
JDBC.assertFullResultSet(rs, expRS, true);
//
// where clause
//
rs = st.executeQuery("select * from t1 where a = current schema");
expColNames = new String [] {"A"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]{{"APP"}};
JDBC.assertFullResultSet(rs, expRS, true);
//
// update statement
//
assertUpdateCount(st, 1, "delete from t1");
st.executeUpdate("insert into t1 values ('test')");
rs = st.executeQuery("select * from t1");
expColNames = new String [] {"A"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]{{"test"}};
JDBC.assertFullResultSet(rs, expRS, true);
assertUpdateCount(st, 1, "update t1 set a = current schema");
rs = st.executeQuery("select * from t1");
expColNames = new String [] {"A"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]{{"APP"}};
JDBC.assertFullResultSet(rs, expRS, true);
st.executeUpdate("set schema judy");
assertUpdateCount(st, 1, "update app.t1 set a = current schema");
rs = st.executeQuery("select * from app.t1");
expColNames = new String [] {"A"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]{{"JUDY"}};
JDBC.assertFullResultSet(rs, expRS, true);
st.executeUpdate("set schema app");
st.executeUpdate("drop table t1");
//
// Column default
//
st.executeUpdate("set schema APP");
st.executeUpdate(
" create table t1 ( a int, b varchar(128) default "
+ "current schema)");
st.executeUpdate("insert into t1 (a) values (1)");
st.executeUpdate("set schema SYS");
st.executeUpdate("insert into app.t1 (a) values (1)");
st.executeUpdate("set schema judy");
st.executeUpdate("insert into app.t1 (a) values (1)");
st.executeUpdate("set schema APP");
rs = st.executeQuery("select * from t1");
expColNames = new String [] {"A", "B"};
JDBC.assertColumnNames(rs, expColNames);
expRS = new String [][]
{
{"1", "APP"},
{"1", "SYS"},
{"1", "JUDY"}
};
JDBC.assertFullResultSet(rs, expRS, true);
st.executeUpdate("drop table t1");
//
// Check constraint - this should fail
//
assertStatementError("42Y39", st,
"create table t1 ( a varchar(128), check (a = "
+ "current schema))");
assertStatementError("42Y39", st,
" create table t1 ( a varchar(128), check (a = "
+ "current sqlid))");
//
// Try mix case
//
st.executeUpdate("create schema \"MiXCase\"");
st.executeUpdate("set schema \"MiXCase\"");
assertCurrentSchema(st, "MiXCase");
st.executeUpdate("set schema app");
assertCurrentSchema(st, "APP");
st.executeUpdate("set schema 'MiXCase'");
assertCurrentSchema(st, "MiXCase");
//
// Following should get error - schema not found
//
assertStatementError("42Y07", st, "set schema 'MIXCASE'");
assertStatementError("42Y07", st, "set schema mixcase");
//
// Try long schema names (maximum schema identifier length
// has been changed to 30 as part of DB2 compatibility work)
//
st.executeUpdate("create schema t23456789012345678901234567890");
assertCurrentSchema(st, "MiXCase");
st.executeUpdate("set schema app");
assertCurrentSchema(st, "APP");
st.executeUpdate("set schema t23456789012345678901234567890");
assertCurrentSchema(st, "T23456789012345678901234567890");
st.executeUpdate(" set schema app");
assertCurrentSchema(st, "APP");
st.executeUpdate("set schema 'T23456789012345678901234567890'");
assertCurrentSchema(st, "T23456789012345678901234567890");
st.executeUpdate("set schema app");
assertCurrentSchema(st, "APP");
setAutoCommit(false);
pSt = prepareStatement("set schema ?");
rs = st.executeQuery("values('T23456789012345678901234567890')");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertUpdateCount(pSt, 0);
assertCurrentSchema(st, "T23456789012345678901234567890");
//
// The following should fail - 129 length
//
assertStatementError("42622", st,
"create schema "
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTT");
assertStatementError("42622", st,
" set schema "
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTT");
assertStatementError("42622", st,
" set schema "
+ "'TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTTT'");
rs = st.executeQuery(
"values('TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT')");
rs.next();
pSt.setObject(1, rs.getObject(1));
assertStatementError("42815", pSt);
rollback();
setAutoCommit(true);
//
// Clean up
//
st.executeUpdate("drop schema judy restrict");
assertStatementError("42622", st,
" drop schema "
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT"
+ "TTTTTTTTTTTTTTTTTTTTTTTTT restrict");
rollback();
st.close();
}
private void assertCurrentSchema(Statement st, String schema)
throws SQLException {
JDBC.assertFullResultSet(
st.executeQuery("values current schema"),
new String [][]{{schema}},
true);
}
}
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