78 lines
2.5 KiB
Java
78 lines
2.5 KiB
Java
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package de.hsadmin.mods.db;
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import javax.persistence.EntityManager;
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import de.hsadmin.core.model.AbstractEntity;
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import de.hsadmin.core.qserv.EntityProcessorFactory;
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import de.hsadmin.core.qserv.Processor;
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/**
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* Factory class which creates Processor instances for dealing with UNIX user
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* accounts.
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*
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* @author mi
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*/
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public class PgSqlDatabaseProcessorFactory implements EntityProcessorFactory {
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/**
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* creates a JDBCProcessor for PostgreSQL and the given user
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*
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* @param user
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* @param password
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* @return
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*/
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public static JDBCProcessor createPostgreSqlProcessor(String user, String password) {
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return new JDBCProcessor("org.postgresql.Driver",
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"jdbc:postgresql://localhost/template1", user, password);
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}
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/**
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* creates a JDBCProcessor for the PostgreSQL admin user
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*
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* @return
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*/
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public static JDBCProcessor createPostgreSqlAdminProcessor() {
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return new JDBCProcessor("org.postgresql.Driver", "jdbc:postgresql://localhost/template1");
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}
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/**
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* @return a Processor which creates a new database
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*/
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public <T extends AbstractEntity> Processor createCreateProcessor(EntityManager em, T entity) {
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Database db = (Database) entity;
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assert db.getInstance().equals("pgsql");
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JDBCProcessor aJDBCP = null;
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String aName = AbstractEntity.escapeString(db.getName());
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String aOwner = AbstractEntity.escapeString(db.getOwner());
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String aEncoding = AbstractEntity.escapeString(db.getEncoding());
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aJDBCP = createPostgreSqlAdminProcessor();
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aJDBCP.addSQL("CREATE DATABASE " + aName + " OWNER=" + aOwner + " ENCODING='" + aEncoding + "' TEMPLATE template0");
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return aJDBCP;
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}
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/**
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* @return a Processor which updates a preexisting database
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*/
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public <T extends AbstractEntity> Processor createUpdateProcessor(EntityManager em, T entity) {
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Database db = (Database) entity;
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assert db.getInstance().equals("pgsql");
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String aName = AbstractEntity.escapeString(db.getName());
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String aOwner = AbstractEntity.escapeString(db.getOwner());
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JDBCProcessor aJDBCP = null;
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aJDBCP = createPostgreSqlAdminProcessor();
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aJDBCP.addSQL("ALTER DATABASE " + aName + " OWNER TO " + aOwner);
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return aJDBCP;
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}
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/**
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* @return a Processor which deletes an existing database
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*/
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public <T extends AbstractEntity> Processor createDeleteProcessor(EntityManager em, T entity) {
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Database db = (Database) entity;
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assert db.getInstance().equals("pgsql");
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JDBCProcessor aJDBCP = createPostgreSqlAdminProcessor();
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String aName = AbstractEntity.escapeString(db.getName());
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aJDBCP.addSQL("DROP DATABASE " + aName);
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return aJDBCP;
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}
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}
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