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/*-------------------------------------------------------------------------
*
* Copyright (c) 2007-2011, PostgreSQL Global Development Group
*
*
*-------------------------------------------------------------------------
*/
package org.postgresql.test.jdbc4;
import java.sql.*;
import junit.framework.TestCase;
import org.postgresql.test.TestUtil;
public class ArrayTest extends TestCase {
private Connection _conn;
public ArrayTest(String name) {
super(name);
}
protected void setUp() throws Exception {
_conn = TestUtil.openDB();
TestUtil.createTable(_conn, "arrtest", "intarr int[], decarr decimal(2,1)[], strarr text[]");
}
protected void tearDown() throws SQLException {
TestUtil.dropTable(_conn, "arrtest");
TestUtil.closeDB(_conn);
}
public void testCreateArrayOfInt() throws SQLException {
PreparedStatement pstmt = _conn.prepareStatement("SELECT ?::int[]");
Integer in[] = new Integer[3];
in[0] = 0;
in[1] = -1;
in[2] = 2;
pstmt.setArray(1, _conn.createArrayOf("int4", in));
ResultSet rs = pstmt.executeQuery();
assertTrue(rs.next());
Array arr = rs.getArray(1);
Integer out[] = (Integer [])arr.getArray();
assertEquals(3, out.length);
assertEquals(0, out[0].intValue());
assertEquals(-1, out[1].intValue());
assertEquals(2, out[2].intValue());
}
public void testCreateArrayOfMultiString() throws SQLException {
PreparedStatement pstmt = _conn.prepareStatement("SELECT ?::text[]");
String in[][] = new String[2][2];
in[0][0] = "a";
in[0][1] = "";
in[1][0] = "\\";
in[1][1] = "\"\\'z";
pstmt.setArray(1, _conn.createArrayOf("text", in));
ResultSet rs = pstmt.executeQuery();
assertTrue(rs.next());
Array arr = rs.getArray(1);
String out[][] = (String [][])arr.getArray();
assertEquals(2, out.length);
assertEquals(2, out[0].length);
assertEquals("a", out[0][0]);
assertEquals("", out[0][1]);
assertEquals("\\", out[1][0]);
assertEquals("\"\\'z", out[1][1]);
}
public void testCreateArrayOfNull() throws SQLException {
if (!TestUtil.haveMinimumServerVersion(_conn, "8.2"))
return;
String sql = "SELECT ?";
// We must provide the type information for V2 protocol
if (TestUtil.isProtocolVersion(_conn, 2)) {
sql = "SELECT ?::int8[]";
}
PreparedStatement pstmt = _conn.prepareStatement(sql);
String in[] = new String[2];
in[0] = null;
in[1] = null;
pstmt.setArray(1, _conn.createArrayOf("int8", in));
ResultSet rs = pstmt.executeQuery();
assertTrue(rs.next());
Array arr = rs.getArray(1);
Long out[] = (Long [])arr.getArray();
assertEquals(2, out.length);
assertNull(out[0]);
assertNull(out[1]);
}
public void testCreateEmptyArrayOfIntViaAlias() throws SQLException {
PreparedStatement pstmt = _conn.prepareStatement("SELECT ?::int[]");
Integer in[] = new Integer[0];
pstmt.setArray(1, _conn.createArrayOf("integer", in));
ResultSet rs = pstmt.executeQuery();
assertTrue(rs.next());
Array arr = rs.getArray(1);
Integer out[] = (Integer [])arr.getArray();
assertEquals(0, out.length);
ResultSet arrRs = arr.getResultSet();
assertFalse(arrRs.next());
}
public void testCreateArrayWithoutServer() throws SQLException {
String in[][] = new String[2][2];
in[0][0] = "a";
in[0][1] = "";
in[1][0] = "\\";
in[1][1] = "\"\\'z";
Array arr = _conn.createArrayOf("varchar", in);
String out[][] = (String [][])arr.getArray();
assertEquals(2, out.length);
assertEquals(2, out[0].length);
assertEquals("a", out[0][0]);
assertEquals("", out[0][1]);
assertEquals("\\", out[1][0]);
assertEquals("\"\\'z", out[1][1]);
}
public void testCreatePrimitiveArray() throws SQLException {
double in[][] = new double[2][2];
in[0][0] = 3.5;
in[0][1] = -4.5;
in[1][0] = 10.0/3;
in[1][1] = 77;
Array arr = _conn.createArrayOf("float8", in);
Double out[][] = (Double [][])arr.getArray();
assertEquals(2, out.length);
assertEquals(2, out[0].length);
assertEquals(3.5, out[0][0], 0.00001);
assertEquals(-4.5, out[0][1], 0.00001);
assertEquals(10.0/3, out[1][0], 0.00001);
assertEquals(77, out[1][1], 0.00001);
}
public void testSetObjectFromJavaArray() throws SQLException {
String[] strArray = new String[]{"a","b","c"};
PreparedStatement pstmt = _conn.prepareStatement("INSERT INTO arrtest(strarr) VALUES (?)");
// Incorrect, but commonly attempted by many ORMs:
try {
pstmt.setObject(1, strArray, Types.ARRAY);
pstmt.executeUpdate();
fail("setObject() with a Java array parameter and Types.ARRAY shouldn't succeed");
} catch (org.postgresql.util.PSQLException ex) {
// Expected failure.
}
// Also incorrect, but commonly attempted by many ORMs:
try {
pstmt.setObject(1, strArray);
pstmt.executeUpdate();
fail("setObject() with a Java array parameter and no Types argument shouldn't succeed");
} catch (org.postgresql.util.PSQLException ex) {
// Expected failure.
}
// Correct way, though the use of "text" as a type is non-portable.
// Only supported for JDK 1.6 and JDBC4
Array sqlArray = _conn.createArrayOf("text", strArray);
pstmt.setArray(1, sqlArray);
pstmt.executeUpdate();
pstmt.close();
}
}
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