org.jooq.util.ddl.DDLDatabase Maven / Gradle / Ivy
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* Licensed under the Apache License, Version 2.0 (the "License");
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* database integrations.
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package org.jooq.util.ddl;
import static org.jooq.impl.DSL.name;
import static org.jooq.tools.StringUtils.isBlank;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import java.util.Scanner;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.jooq.DSLContext;
import org.jooq.Queries;
import org.jooq.Query;
import org.jooq.exception.DataAccessException;
import org.jooq.impl.DSL;
import org.jooq.impl.ParserException;
import org.jooq.tools.JooqLogger;
import org.jooq.util.SchemaDefinition;
import org.jooq.util.h2.H2Database;
import org.h2.api.ErrorCode;
/**
* The DDL database.
*
* This meta data source parses a set of SQL scripts, translates them to the H2
* dialect and runs them on an in-memory H2 database before reverse engineering
* the outcome.
*
* The SQL scripts are located in the scripts scripts property
* available from {@link #getProperties()}.
*
* @author Lukas Eder
*/
public class DDLDatabase extends H2Database {
private static final JooqLogger log = JooqLogger.getLogger(DDLDatabase.class);
private static final Pattern P_NAME = Pattern.compile("(?s:.*?\"([^\"]*)\".*)");
private Connection connection;
private DSLContext ctx;
@Override
protected DSLContext create0() {
if (connection == null) {
String scripts = getProperties().getProperty("scripts");
String encoding = getProperties().getProperty("encoding", "UTF-8");
if (isBlank(scripts)) {
scripts = "";
log.warn("No scripts defined", "It is recommended that you provide an explicit script directory to scan");
}
try {
Properties info = new Properties();
info.put("user", "sa");
info.put("password", "");
connection = new org.h2.Driver().connect("jdbc:h2:mem:jooq-meta-extensions-" + UUID.randomUUID(), info);
ctx = DSL.using(connection);
InputStream in = null;
try {
in = DDLDatabase.class.getResourceAsStream(scripts);
if (in != null) {
log.info("Reading from classpath: " + scripts);
}
else {
File file = new File(scripts);
if (file.exists()) {
if (file.isFile()) {
log.info("Reading from file: " + scripts);
in = new FileInputStream(file);
}
else if (file.isDirectory()) {
log.warn("Reading from directory not yet supported: " + scripts);
}
}
}
if (in != null) {
Scanner s = new Scanner(in, encoding).useDelimiter("\\A");
Queries queries = ctx.parser().parse(s.hasNext() ? s.next() : "");
for (Query query : queries) {
repeat:
for (;;) {
try {
query.execute();
log.info(query);
break repeat;
}
catch (DataAccessException e) {
// [#7039] Auto create missing schemas. We're using the
if (Integer.toString(ErrorCode.SCHEMA_NOT_FOUND_1).equals(e.sqlState())) {
SQLException cause = e.getCause(SQLException.class);
if (cause != null) {
Matcher m = P_NAME.matcher(cause.getMessage());
if (m.find()) {
Query createSchema = ctx.createSchemaIfNotExists(name(m.group(1)));
createSchema.execute();
log.info(createSchema);
continue repeat;
}
}
}
throw e;
}
}
}
}
else {
log.error("Could not find script source : " + scripts);
}
}
finally {
if (in != null)
try {
in.close();
}
catch (Exception ignore) {}
}
}
catch (ParserException e) {
log.error("An exception occurred while parsing script source : " + scripts + ". Please report this error to https://github.com/jOOQ/jOOQ/issues/new", e);
throw e;
}
catch (Exception e) {
throw new DataAccessException("Error while exporting schema", e);
}
}
return ctx;
}
@Override
protected List getSchemata0() throws SQLException {
List result = new ArrayList(super.getSchemata0());
// [#5608] The H2-specific INFORMATION_SCHEMA is undesired in the DDLDatabase's output
// we're explicitly omitting it here for user convenience.
Iterator it = result.iterator();
while (it.hasNext())
if ("INFORMATION_SCHEMA".equals(it.next().getName()))
it.remove();
return result;
}
}