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JDBC-193: Preparation for testing metadata of other methods
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| /* | ||
| * $Id$ | ||
| * | ||
| * Firebird Open Source J2ee connector - jdbc driver | ||
| * | ||
| * Distributable under LGPL license. | ||
| * You may obtain a copy of the License at http://www.gnu.org/copyleft/lgpl.html | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * LGPL License for more details. | ||
| * | ||
| * This file was created by members of the firebird development team. | ||
| * All individual contributions remain the Copyright (C) of those | ||
| * individuals. Contributors to this file are either listed here or | ||
| * can be obtained from a CVS history command. | ||
| * | ||
| * All rights reserved. | ||
| */ | ||
| package org.firebirdsql.jdbc; | ||
|
|
||
| import java.sql.ResultSet; | ||
| import java.sql.ResultSetMetaData; | ||
| import java.sql.SQLException; | ||
| import java.sql.Types; | ||
| import static junit.framework.Assert.*; | ||
|
|
||
| /** | ||
| * Validator for columns of metadata resultsets. | ||
| * | ||
| * @author <a href="mailto:mrotteveel@users.sourceforge.net">Mark Rotteveel</a> | ||
| * | ||
| * @param <T> Enum type, implementing {@link MetaDataInfo} for metadata column information | ||
| */ | ||
| public class MetaDataValidator<T extends Enum & MetaDataValidator.MetaDataInfo> { | ||
|
|
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| private T mdi; | ||
|
|
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| protected MetaDataValidator(T mdi) { | ||
| this.mdi = mdi; | ||
| } | ||
|
|
||
| /** | ||
| * Asserts the expected position of this column in the resultset. | ||
| * | ||
| * @param rs ResultSet to use for asserting the column position | ||
| * @throws SQLException | ||
| */ | ||
| public void assertColumnPosition(ResultSet rs) throws SQLException { | ||
| assertEquals(String.format("Unexpected column position for %s", mdi), mdi.getPosition(), rs.findColumn(mdi.name())); | ||
| } | ||
|
|
||
| /** | ||
| * Asserts the type of this column as reported by the ResultSetMetaData of this ResultSet. | ||
| * | ||
| * @param rs ResultSet | ||
| * @throws SQLException | ||
| */ | ||
| public void assertColumnType(ResultSet rs) throws SQLException { | ||
| ResultSetMetaData md = rs.getMetaData(); | ||
| assertEquals(String.format("Unexpected SQL Type for column %s", mdi), getSqlType(), md.getColumnType(mdi.getPosition())); | ||
| } | ||
|
|
||
| /** | ||
| * Asserts the value of this column on the current row of the resultset. | ||
| * | ||
| * @param rs ResultSet | ||
| * @param expectedValue Value expected | ||
| * @throws SQLException | ||
| */ | ||
| public void assertColumnValue(ResultSet rs, Object expectedValue) throws SQLException { | ||
| if (mdi.getColumnClass().isInstance(expectedValue) || expectedValue == null) { | ||
| if (mdi.getColumnClass().equals(String.class)) { | ||
| assertStringColumnValue(rs, (String) expectedValue); | ||
| } else if (mdi.getColumnClass().equals(Integer.class)) { | ||
| assertIntegerColumnValue(rs, (Integer) expectedValue); | ||
| } else if (mdi.getColumnClass().equals(Short.class)) { | ||
| assertShortColumnValue(rs, (Short) expectedValue); | ||
| } else { | ||
| assertObjectColumnValue(rs, expectedValue); | ||
| } | ||
| } else { | ||
| assertObjectColumnValue(rs, expectedValue); | ||
| } | ||
| } | ||
|
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| private void assertObjectColumnValue(ResultSet rs, Object expectedValue) throws SQLException { | ||
| Object value = rs.getObject(mdi.name()); | ||
| assertEquals(String.format("Unexpected value for %s", mdi), expectedValue, value); | ||
| } | ||
|
|
||
| private void assertShortColumnValue(ResultSet rs, Short expectedValue) throws SQLException { | ||
| short value = rs.getShort(mdi.name()); | ||
| if (expectedValue != null) { | ||
| assertEquals(String.format("Unexpected value for %s", mdi), expectedValue.shortValue(), value); | ||
| assertFalse(String.format("%s should not be actual NULL", mdi), rs.wasNull()); | ||
| } else { | ||
| assertEquals(String.format("Unexpected value for %s (expected NULL/0)", mdi), 0, value); | ||
| assertTrue(String.format("%s should be actual NULL", mdi), rs.wasNull()); | ||
| } | ||
| } | ||
|
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||
| private void assertIntegerColumnValue(ResultSet rs, Integer expectedValue) throws SQLException { | ||
| int value = rs.getInt(mdi.name()); | ||
| if (expectedValue != null) { | ||
| assertEquals(String.format("Unexpected value for %s", mdi), expectedValue.intValue(), value); | ||
| assertFalse(String.format("%s should not be actual NULL", mdi), rs.wasNull()); | ||
| } else { | ||
| assertEquals(String.format("Unexpected value for %s (expected NULL/0)", mdi), 0, value); | ||
| assertTrue(String.format("%s should be actual NULL", mdi), rs.wasNull()); | ||
| } | ||
| } | ||
|
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| private void assertStringColumnValue(ResultSet rs, String expectedValue) | ||
| throws SQLException { | ||
| String value = rs.getString(mdi.name()); | ||
| assertEquals(String.format("Unexpected value for %s", mdi), expectedValue, value); | ||
| } | ||
|
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| private int getSqlType() { | ||
| if (mdi.getColumnClass() == String.class) { | ||
| return Types.VARCHAR; | ||
| } else if (mdi.getColumnClass() == Integer.class) { | ||
| return Types.INTEGER; | ||
| } else if (mdi.getColumnClass() == Short.class) { | ||
| return Types.SMALLINT; | ||
| } | ||
| return Types.OTHER; | ||
| } | ||
|
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| /** | ||
| * Interface for the information enums for metadata columns should be able to provide for the {@link MetaDataValidator}. | ||
| */ | ||
| public interface MetaDataInfo { | ||
|
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| /** | ||
| * Position of this metadata column in the resultset | ||
| * | ||
| * @return 1-based position of the column | ||
| */ | ||
| int getPosition(); | ||
|
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||
| /** | ||
| * Java class of the expected column type (String=> Varchar, Integer=> Integer, Short=> Smallint) | ||
| */ | ||
| Class<?> getColumnClass(); | ||
|
|
||
| /** | ||
| * @return MetaDataValidator for this MetaDataInfo instance | ||
| */ | ||
| MetaDataValidator<?> getValidator(); | ||
| } | ||
| } |
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