iciql/src/test/java/com/iciql/test/ClobTest.java

/*
 * Copyright 2004-2011 H2 Group.
 * Copyright 2011 James Moger.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.iciql.test;

import com.iciql.Db;
import com.iciql.Iciql;
import org.junit.Test;

import java.text.MessageFormat;
import java.util.Arrays;
import java.util.List;

import static com.iciql.Define.primaryKey;
import static com.iciql.Define.tableName;
import static org.junit.Assert.assertEquals;

/**
 * Tests if converting a CLOB to a String works.
 */
public class ClobTest {

    @Test
    public void testClob() throws Exception {
        String create = "CREATE TABLE CLOB_TEST(ID INT PRIMARY KEY, WORDS {0})";
        Db db = IciqlSuite.openNewDb();
        db.executeUpdate(MessageFormat.format(create, "VARCHAR(255)"));
        db.insertAll(StringRecord.getList());
        testSimpleUpdate(db, "VARCHAR fail");
        db.executeUpdate("DROP TABLE CLOB_TEST");
        db.close();

        db = IciqlSuite.openNewDb();
        db.executeUpdate(MessageFormat.format(create, db.getDialect().convertSqlType("CLOB")));
        db.insertAll(StringRecord.getList());
        testSimpleUpdate(db, "CLOB fail because of single quote artifacts");
        db.executeUpdate("DROP TABLE CLOB_TEST");
        db.close();
    }

    private void testSimpleUpdate(Db db, String failureMsg) {
        String newWords = "I changed the words";
        StringRecord r = new StringRecord();
        StringRecord originalRecord = db.from(r).where(r.id).is(2).selectFirst();
        String oldWords = originalRecord.words;
        originalRecord.words = newWords;
        db.update(originalRecord);

        StringRecord r2 = new StringRecord();
        StringRecord revisedRecord = db.from(r2).where(r2.id).is(2).selectFirst();
        assertEquals(failureMsg, newWords, revisedRecord.words);

        // undo update
        originalRecord.words = oldWords;
        db.update(originalRecord);
    }

    /**
     * A simple class used in this test.
     */
    public static class StringRecord implements Iciql {

        public Integer id;
        public String words;

        public StringRecord() {
            // public constructor
        }

        private StringRecord(int id, String words) {
            this.id = id;
            this.words = words;
        }

        public void defineIQ() {
            tableName("CLOB_TEST");
            primaryKey(id);
        }

        private static StringRecord create(int id, String words) {
            return new StringRecord(id, words);
        }

        public static List<StringRecord> getList() {
            StringRecord[] list = {
                    create(1, "Once upon a midnight dreary, while I pondered weak and weary,"),
                    create(2, "Over many a quaint and curious volume of forgotten lore,"),
                    create(3, "While I nodded, nearly napping, suddenly there came a tapping,"),
                    create(4, "As of some one gently rapping, rapping at my chamber door."),
                    create(5, "`'Tis some visitor,' I muttered, `tapping at my chamber door -"),
                    create(6, "Only this, and nothing more.'")};

            return Arrays.asList(list);
        }

        public String toString() {
            return id + ": " + words;
        }
    }
}