More jOOQ Academy content

This commit is contained in:
Lukas Eder 2014-09-17 18:37:34 +02:00
parent 31477324dc
commit afbb924bee
8 changed files with 207 additions and 36 deletions

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@ -9,28 +9,8 @@
</layout>
</appender>
<logger name="org.springframework.core">
<level value="info"/>
</logger>
<logger name="org.springframework.beans">
<level value="info"/>
</logger>
<logger name="org.springframework.context">
<level value="info"/>
</logger>
<logger name="org.springframework.web">
<level value="info"/>
</logger>
<logger name="org.jooq.impl">
<level value="debug"/>
</logger>
<root>
<priority value="debug"/>
<priority value="info"/>
<appender-ref ref="console"/>
</root>
</log4j:configuration>

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@ -43,8 +43,6 @@ package org.jooq.academy.section1;
import static org.jooq.example.db.h2.Tables.AUTHOR;
import static org.jooq.impl.DSL.select;
import java.sql.SQLException;
import org.jooq.academy.tools.Tools;
import org.junit.Test;
@ -52,7 +50,7 @@ import org.junit.Test;
public class Example_1_1_PrintTheQuery {
@Test
public void run() throws SQLException {
public void run() {
// This creates a simple query without executing it
// By default, a Query's toString() method will print the SQL string to the console

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@ -43,8 +43,6 @@ package org.jooq.academy.section1;
import static org.jooq.academy.tools.Tools.connection;
import static org.jooq.example.db.h2.Tables.AUTHOR;
import java.sql.SQLException;
import org.jooq.academy.tools.Tools;
import org.jooq.impl.DSL;
@ -53,7 +51,7 @@ import org.junit.Test;
public class Example_1_2_ExecuteTheQuery {
@Test
public void run() throws SQLException {
public void run() {
// All we need to execute a query is provide it with a connection and then
// call fetch() on it.

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@ -45,8 +45,6 @@ import static org.jooq.example.db.h2.Tables.AUTHOR;
import static org.jooq.example.db.h2.Tables.BOOK;
import static org.jooq.impl.DSL.select;
import java.sql.SQLException;
import org.jooq.DSLContext;
import org.jooq.academy.tools.Tools;
import org.jooq.impl.DSL;
@ -56,7 +54,7 @@ import org.junit.Test;
public class Example_1_4_Predicates {
@Test
public void run() throws SQLException {
public void run() {
DSLContext dsl = DSL.using(connection());
Tools.title("Combine predicates using AND");
@ -85,6 +83,16 @@ public class Example_1_4_Predicates {
.fetch()
);
/*
Tools.title("Wrong type of columns in subquery");
Tools.print(
dsl.select()
.from(AUTHOR)
.where(AUTHOR.ID.in(select(BOOK.TITLE).from(BOOK)))
.fetch()
);
*/
/*
Tools.title("Wrong number of columns in subquery");
Tools.print(

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@ -45,8 +45,6 @@ import static org.jooq.example.db.h2.Tables.AUTHOR;
import static org.jooq.impl.DSL.concat;
import static org.jooq.impl.DSL.val;
import java.sql.SQLException;
import org.jooq.DSLContext;
import org.jooq.academy.tools.Tools;
import org.jooq.impl.DSL;
@ -56,7 +54,7 @@ import org.junit.Test;
public class Example_1_5_ColumnExpressions {
@Test
public void run() throws SQLException {
public void run() {
DSLContext dsl = DSL.using(connection());
Tools.title("CONCAT() function with prefix notation");

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@ -61,14 +61,42 @@ public class Example_2_1_ActiveRecords {
Connection connection = connection();
DSLContext dsl = DSL.using(connection);
AuthorRecord author;
try {
Tools.title("Loading and changing active records");
AuthorRecord author = dsl.selectFrom(AUTHOR).where(AUTHOR.ID.eq(1)).fetchOne();
author = dsl.selectFrom(AUTHOR).where(AUTHOR.ID.eq(1)).fetchOne();
author.setDateOfBirth(Date.valueOf("2000-01-01"));
author.store();
Tools.print(author);
Tools.title("Creating a new active record");
author = dsl.newRecord(AUTHOR);
author.setId(3);
author.setFirstName("Alfred");
author.setLastName("Hitchcock");
author.store();
Tools.print(author);
Tools.title("Refreshing an active record");
author = dsl.newRecord(AUTHOR);
author.setId(3);
author.refresh();
Tools.print(author);
Tools.title("Updating an active record");
author.setDateOfBirth(Date.valueOf("1899-08-13"));
author.store();
Tools.print(author);
Tools.title("Deleting an active record");
author.delete();
Tools.print(dsl.selectFrom(AUTHOR).fetch());
}
// Don't store the changes

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@ -0,0 +1,83 @@
/**
* Copyright (c) 2009-2013, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* This work is dual-licensed
* - under the Apache Software License 2.0 (the "ASL")
* - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
* =============================================================================
* You may choose which license applies to you:
*
* - If you're using this work with Open Source databases, you may choose
* either ASL or jOOQ License.
* - If you're using this work with at least one commercial database, you must
* choose jOOQ License
*
* For more information, please visit http://www.jooq.org/licenses
*
* Apache Software License 2.0:
* -----------------------------------------------------------------------------
* 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.
*
* jOOQ License and Maintenance Agreement:
* -----------------------------------------------------------------------------
* Data Geekery grants the Customer the non-exclusive, timely limited and
* non-transferable license to install and use the Software under the terms of
* the jOOQ License and Maintenance Agreement.
*
* This library is distributed with a LIMITED WARRANTY. See the jOOQ License
* and Maintenance Agreement for more details: http://www.jooq.org/licensing
*/
package org.jooq.academy.section3;
import static org.jooq.academy.tools.Tools.connection;
import static org.jooq.example.db.h2.Tables.AUTHOR;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.jooq.academy.tools.Tools;
import org.jooq.impl.DSL;
import org.junit.Test;
public class Example_3_1_CheckedExceptions {
@Test
public void run() throws SQLException {
Connection connection = connection();
Tools.title("JDBC throws lots of checked exceptions");
// These two calls can throw a SQLException
try (PreparedStatement stmt = connection.prepareStatement("SELECT FIRST_NAME FROM AUTHOR");
ResultSet rs = stmt.executeQuery()) {
// This can throw a SQLException
while (rs.next()) {
// This can throw a SQLException
System.out.println(rs.getString(1));
}
}
Tools.title("jOOQ doesn't throw any checked exceptions");
DSL.using(connection)
.select(AUTHOR.FIRST_NAME)
.from(AUTHOR)
.fetch()
.forEach(record -> System.out.println(record.getValue(AUTHOR.FIRST_NAME)));
}
}

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@ -0,0 +1,78 @@
/**
* Copyright (c) 2009-2013, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* This work is dual-licensed
* - under the Apache Software License 2.0 (the "ASL")
* - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
* =============================================================================
* You may choose which license applies to you:
*
* - If you're using this work with Open Source databases, you may choose
* either ASL or jOOQ License.
* - If you're using this work with at least one commercial database, you must
* choose jOOQ License
*
* For more information, please visit http://www.jooq.org/licenses
*
* Apache Software License 2.0:
* -----------------------------------------------------------------------------
* 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.
*
* jOOQ License and Maintenance Agreement:
* -----------------------------------------------------------------------------
* Data Geekery grants the Customer the non-exclusive, timely limited and
* non-transferable license to install and use the Software under the terms of
* the jOOQ License and Maintenance Agreement.
*
* This library is distributed with a LIMITED WARRANTY. See the jOOQ License
* and Maintenance Agreement for more details: http://www.jooq.org/licensing
*/
package org.jooq.academy.section3;
import static org.jooq.academy.tools.Tools.connection;
import static org.jooq.example.db.h2.Tables.AUTHOR;
import java.sql.Connection;
import java.util.Arrays;
import org.jooq.Record;
import org.jooq.academy.tools.Tools;
import org.jooq.impl.DSL;
import org.junit.Test;
public class Example_3_2_ResultSets {
@Test
public void run() {
Connection connection = connection();
Tools.title("Using jOOQ Results in foreach loops");
for (Record record : DSL.using(connection)
.select()
.from(AUTHOR)
.fetch()) {
System.out.println(record);
}
Tools.title("Using jOOQ Results with Java 8 streams");
DSL.using(connection)
.select()
.from(AUTHOR)
.fetch()
.stream()
.flatMap(record -> Arrays.stream(record.intoArray()))
.forEach(System.out::println);
}
}