Revert "Remove dead HSQLDB driver"

We cannot silently convert user data or their used file formats
and then await them to accept it or reinstall an older version.

Let us make a soft change instead of an hard (heart) break
and avoid us to been attacked with fire and forks from our users.

This reverts commit 8d381ae8d6c742a7e15bf7ad9e07b65f81728ef6.

Change-Id: Ia153640935e355771acb85cf652f8fe4c21fafbb
Reviewed-on: https://gerrit.libreoffice.org/52731
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Bunth <btomi96@gmail.com>

1 files changed, 320 insertions, 0 deletions

diff --git a/external/hsqldb/patches/jdbc-4.1.patch b/external/hsqldb/patches/jdbc-4.1.patch
new file mode 100644
index 000000000000..7884148c5fb4
--- /dev/null
+++ b/external/hsqldb/patches/jdbc-4.1.patch
@@ -0,0 +1,320 @@
+--- misc/hsqldb/build/build.xml	2012-07-12 10:58:11.000000000 +0200
++++ misc/build/hsqldb/build/build.xml	2012-07-12 10:49:28.000000000 +0200
+@@ -98,16 +98,24 @@
+       <echo message="ant.java.hasjsse=${ant.java.hasjsse}" />
+    </target>
+ 
+-   <target name="javaversion6">
++   <target name="javaversion7" unless="ant.java.iscjavaset">
++      <available classname="java.util.Objects" property="ant.java.iscjava17"/>
++      <available classname="java.util.Objects" property="ant.java.iscjavaset"/>
++   </target>
++
++   <target name="javaversion6" depends="javaversion7" unless="ant.java.iscjavaset">
+       <available classname="java.net.IDN" property="ant.java.iscjava16"/>
++      <available classname="java.net.IDN" property="ant.java.iscjavaset"/>
+    </target>
+ 
+-   <target name="javaversion4" depends="javaversion6" unless="ant.java.iscjava16">
++   <target name="javaversion4" depends="javaversion6" unless="ant.java.iscjavaset">
+       <available classname="java.nio.Buffer" property="ant.java.iscjava14"/>
++      <available classname="java.nio.Buffer" property="ant.java.iscjavaset"/>
+    </target>
+ 
+-   <target name="javaversion2" depends="javaversion4" unless="ant.java.iscjava14">
++   <target name="javaversion2" depends="javaversion4" unless="ant.java.iscjavaset">
+       <available classname="java.lang.ref.Reference" property="ant.java.iscjava12"/>
++      <available classname="java.lang.ref.Reference" property="ant.java.iscjavaset"/>
+    </target>
+ 
+    <target name="-prepare" depends="init,javaversion2">
+@@ -166,6 +177,7 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcStatement.java"/>
+         <arg file="${src}/org/hsqldb/persist/LockFile.java"/>
+         <arg file="${src}/org/hsqldb/persist/Logger.java"/>
+@@ -183,6 +195,7 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDataSource.java"/>
+@@ -210,6 +223,7 @@
+         <arg value="+JAVA2FULL"/>
+         <arg value="-JAVA4"/>
+         <arg value="-JAVA6"/>
++        <arg value="-JAVA7"/>
+        </java>
+     </target>
+ 
+@@ -218,6 +232,7 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDataSource.java"/>
+@@ -244,6 +259,7 @@
+         <arg value="+JAVA2FULL"/>
+         <arg value="+JAVA4"/>
+         <arg value="-JAVA6"/>
++        <arg value="-JAVA7"/>
+        </java>
+     </target>
+ 
+@@ -253,6 +269,43 @@
+       <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
+         <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
+         <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcDataSource.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcCallableStatement.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcClob.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcConnection.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcParameterMetaData.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcPreparedStatement.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcResultSet.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcResultSetMetaData.java"/>
++        <arg file="${src}/org/hsqldb/jdbc/jdbcStatement.java"/>
++        <arg file="${src}/org/hsqldb/persist/LockFile.java"/>
++        <arg file="${src}/org/hsqldb/persist/Logger.java"/>
++        <arg file="${src}/org/hsqldb/persist/ScaledRAFile.java"/>
++        <arg file="${src}/org/hsqldb/rowio/RowInputTextLog.java"/>
++        <arg file="${src}/org/hsqldb/util/DatabaseManager.java"/>
++        <arg file="${src}/org/hsqldb/util/ConnectionDialogCommon.java"/>
++        <arg file="${src}/org/hsqldb/lib/SimpleLog.java"/>
++        <arg file="${src}/org/hsqldb/rowio/RowInputTextLog.java"/>
++        <arg file="${src}/org/hsqldb/lib/SimpleLog.java"/>
++        <arg file="${src}/org/hsqldb/rowio/RowInputTextLog.java"/>
++        <arg file="${src}/org/hsqldb/HsqlDateTime.java"/>
++        <arg value="+JAVA2"/>
++        <arg value="+JAVA2FULL"/>
++        <arg value="+JAVA4"/>
++        <arg value="+JAVA6"/>
++        <arg value="-JAVA7"/>
++      </java>
++    </target>
++
++    <target name="switchtojdk17" depends="switchtojdk16"
++            description="self explanatory" if="ant.java.iscjava17">
++      <java classname="org.hsqldb.util.CodeSwitcher" classpath="classes" >
++        <arg file="${src}/org/hsqldb/lib/java/JavaSystem.java"/>
++        <arg file="${src}/org/hsqldb/lib/HsqlTimer.java"/>
++        <arg file="${src}/org/hsqldb/jdbcDriver.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcBlob.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDatabaseMetaData.java"/>
+         <arg file="${src}/org/hsqldb/jdbc/jdbcDataSource.java"/>
+@@ -279,10 +332,11 @@
+         <arg value="+JAVA2FULL"/>
+         <arg value="+JAVA4"/>
+         <arg value="+JAVA6"/>
++        <arg value="+JAVA7"/>
+       </java>
+     </target>
+ 
+-    <target name="store" depends="switchtojdk16"
++    <target name="store" depends="switchtojdk17"
+             description="compiles the /store folder">
+       <javac srcdir="${src}"
+              destdir="classes"
+--- misc/hsqldb/src/org/hsqldb/jdbc/jdbcCallableStatement.java	2012-02-08 15:14:42.802123563 +0000
++++ misc/build/hsqldb/src/org/hsqldb/jdbc/jdbcCallableStatement.java	2012-02-08 15:47:35.842635642 +0000
+@@ -3375,4 +3375,18 @@
+ */
+ 
+ //#endif JAVA6
++
++//#ifdef JAVA7
++    public <T> T getObject(String columnLabel, Class<T> type) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++    public <T> T getObject(int ColumnIndex, Class<T> type) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++
++//#endif JAVA7
+ }
+--- misc/hsqldb/src/org/hsqldb/jdbc/jdbcConnection.java	2012-02-08 15:14:42.802123563 +0000
++++ misc/build/hsqldb/src/org/hsqldb/jdbc/jdbcConnection.java	2012-02-08 15:47:35.851635628 +0000
+@@ -48,6 +48,12 @@
+ */
+ 
+ //#endif JAVA6
++
++//#ifdef JAVA7
++import java.util.concurrent.Executor;
++
++//#endif JAVA7
++
+ import java.sql.PreparedStatement;
+ import java.sql.SQLException;
+ import java.sql.SQLWarning;
+@@ -2793,4 +2799,31 @@
+ */
+ 
+ //#endif JAVA6
++
++//#ifdef JAVA7
++    public int getNetworkTimeout() throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++    public void setNetworkTimeout(Executor executor, int millis) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++    public void abort(Executor executor) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++    
++    public String getSchema() throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++    public void setSchema(String schema) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++//#endif JAVA7
+ }
+--- misc/hsqldb/src/org/hsqldb/jdbc/jdbcDatabaseMetaData.java	2012-02-08 15:14:42.802123563 +0000
++++ misc/build/hsqldb/src/org/hsqldb/jdbc/jdbcDatabaseMetaData.java	2012-02-08 15:47:35.835635654 +0000
+@@ -5693,4 +5693,21 @@
+ */
+ 
+ //#endif JAVA6
++
++
++//#ifdef JAVA7
++    public boolean generatedKeyAlwaysReturned() throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++    public ResultSet getPseudoColumns(String catalog, String schemaPattern,
++                                      String tableNamePattern, String columnNamePattern) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++
++//#endif JAVA7
++
+ }
+--- misc/hsqldb/src/org/hsqldb/jdbc/jdbcDataSource.java	2012-02-08 15:14:42.802123563 +0000
++++ misc/build/hsqldb/src/org/hsqldb/jdbc/jdbcDataSource.java	2012-02-08 15:47:35.836635653 +0000
+@@ -47,6 +47,11 @@
+ //#endif JAVA4
+ import org.hsqldb.jdbcDriver;
+ 
++//#ifdef JAVA7
++import java.sql.SQLFeatureNotSupportedException;
++import java.util.logging.Logger;
++//#endif JAVA7
++
+ // boucherb@users 20040411 - doc 1.7.2 - javadoc updates toward 1.7.2 final
+ 
+ /**
+@@ -323,4 +328,15 @@
+ */
+ 
+ //#endif JAVA6
++
++//#ifdef JAVA7
++    public Logger getParentLogger() throws SQLFeatureNotSupportedException
++    {
++        throw new AbstractMethodError(
++            "org.hsqldb.jdbc.jdbcDataSource.getParentLogger should throw" +
++            " SQLFeatureNotSupportedException, but that is not yet available" +
++            " in Java 5");
++    }
++
++//#endif JAVA7
+ }
+--- misc/hsqldb/src/org/hsqldb/jdbc/jdbcResultSet.java	2012-02-08 15:14:42.802123563 +0000
++++ misc/build/hsqldb/src/org/hsqldb/jdbc/jdbcResultSet.java	2012-02-08 15:47:35.866635606 +0000
+@@ -5324,4 +5324,19 @@
+ */
+ 
+ //#endif JAVA6
++
++//#ifdef JAVA7
++
++    public <T> T getObject(String columnLabel, Class<T> type) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++    public <T> T getObject(int columnNum, Class<T> type) throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++//#endif JAVA7
++
+ }
+--- misc/hsqldb/src/org/hsqldb/jdbc/jdbcStatement.java	2012-02-08 15:14:42.802123563 +0000
++++ misc/build/hsqldb/src/org/hsqldb/jdbc/jdbcStatement.java	2012-02-08 15:47:35.872635595 +0000
+@@ -1608,4 +1608,16 @@
+     }
+ */
+ //#endif JAVA6
++
++//#ifdef JAVA7
++    public boolean isCloseOnCompletion() throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++
++    public void closeOnCompletion() throws SQLException
++    {
++        throw new UnsupportedOperationException("Not supported yet.");
++    }
++//#endif JAVA7
+ }
+--- misc/hsqldb/src/org/hsqldb/jdbcDriver.java	2012-02-08 15:14:42.800123566 +0000
++++ misc/build/hsqldb/src/org/hsqldb/jdbcDriver.java	2012-02-08 15:47:35.826635667 +0000
+@@ -42,6 +42,11 @@
+ import org.hsqldb.persist.HsqlDatabaseProperties;
+ import org.hsqldb.persist.HsqlProperties;
+ 
++//#ifdef JAVA7
++import java.sql.SQLFeatureNotSupportedException;
++import java.util.logging.Logger;
++//#endif JAVA7
++
+ // fredt@users 20011220 - patch 1.7.0 by fredt
+ // new version numbering scheme
+ // fredt@users 20020320 - patch 1.7.0 - JDBC 2 support and error trapping
+@@ -321,4 +326,15 @@
+             DriverManager.registerDriver(new jdbcDriver());
+         } catch (Exception e) {}
+     }
++
++//#ifdef JAVA7
++    public Logger getParentLogger() throws SQLFeatureNotSupportedException
++    {
++        throw new AbstractMethodError(
++            "org.hsqldb.jdbcDriver.getParentLogger should throw" +
++            " SQLFeatureNotSupportedException, but that is not yet available" +
++            " in Java 5");
++    }
++
++//#endif JAVA7
+ }