svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.db / org.gvsig.fmap.dal.db.jdbc / src / main / java / org / gvsig / fmap / dal / store / jdbc2 / spi / operations / AbstractConnectionOperation.java @ 46315
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2020 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.fmap.dal.store.jdbc2.spi.operations; |
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import java.sql.Connection; |
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import java.sql.SQLException; |
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import org.gvsig.fmap.dal.resource.exception.AccessResourceException; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCTransactionRollbackException; |
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import org.gvsig.fmap.dal.store.jdbc.exception.SQLRuntimeException; |
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import org.gvsig.fmap.dal.store.jdbc2.JDBCConnection; |
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import org.gvsig.fmap.dal.store.jdbc2.JDBCHelper; |
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import org.gvsig.fmap.dal.store.jdbc2.spi.JDBCSQLBuilderBase; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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@SuppressWarnings("UseSpecificCatch") |
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public abstract class AbstractConnectionOperation implements ConnectionOperation { |
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final static protected Logger LOGGER = LoggerFactory.getLogger(AbstractConnectionOperation.class); |
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final protected JDBCHelper helper; |
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protected JDBCConnection conn = null; |
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public AbstractConnectionOperation(JDBCHelper helper) {
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this.helper = helper;
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} |
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@Override
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public boolean continueTransactionAllowed() { |
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return this.helper.getTransaction()!=null; |
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} |
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@Override
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public boolean needTransaction() { |
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return true; |
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} |
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protected JDBCSQLBuilderBase createSQLBuilder() {
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return this.helper.createSQLBuilder(); |
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} |
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@Override
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public Object perform() { |
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try {
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if( this.helper.isThreadSafe() ) { |
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return this.perform_operation(); |
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} |
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synchronized(AbstractConnectionOperation.class) {
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return this.perform_operation(); |
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} |
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} catch (RuntimeException ex) { |
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throw ex;
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} catch (Exception ex) { |
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throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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} |
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} |
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protected JDBCConnection getConnection() throws AccessResourceException { |
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if( this.conn == null ) { |
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this.conn = this.helper.getConnection(); |
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} |
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return this.conn; |
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} |
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protected Object perform_operation() throws Exception { |
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Object result = null; |
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LOGGER.trace("preparing execution of "+this.getClass().getSimpleName()+"."); |
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if( needTransaction() ) {
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try {
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if( this.helper.allowNestedOperations() ) { |
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boolean commitOnFinish = true; |
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if (!this.getConnection().isInTransaction()) { |
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commitOnFinish = false;
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} |
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this.getConnection().begin();
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try {
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LOGGER.trace("Excuting operation {}.", this.getClass().getSimpleName()); |
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result = perform(this.getConnection());
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} catch (Exception ex) { |
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try {
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this.getConnection().rollback();
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} catch (Exception e1) { |
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throw new JDBCTransactionRollbackException(e1, ex); |
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} |
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throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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} |
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if( commitOnFinish ) {
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this.getConnection().commit();
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} |
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} else {
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if (this.getConnection().isInTransaction()) { |
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if (!continueTransactionAllowed()) {
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throw new SQLException("nested operations not allowed."); |
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} |
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} |
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this.getConnection().begin();
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try {
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LOGGER.trace("Excuting operation {}.", this.getClass().getSimpleName()); |
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result = perform(this.getConnection());
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} catch (SQLRuntimeException ex) {
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try {
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this.getConnection().rollback();
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} catch (Exception e1) { |
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throw new JDBCTransactionRollbackException(e1, ex); |
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} |
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throw new SQLRuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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} catch (Exception ex) { |
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try {
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this.getConnection().rollback();
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} catch (Exception e1) { |
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throw new JDBCTransactionRollbackException(e1, ex); |
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} |
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throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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} |
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this.getConnection().commit();
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} |
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} finally {
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closeConnection(result); |
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} |
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} else {
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try {
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LOGGER.trace("Excuting operation {}.", this.getClass().getSimpleName()); |
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result = perform(this.getConnection());
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} catch (SQLRuntimeException ex) {
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throw new SQLRuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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} catch (Exception ex) { |
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throw new RuntimeException("Can't perform operation '"+this.getClass().getSimpleName()+"'.",ex); |
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} finally {
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closeConnection(result); |
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} |
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} |
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return result;
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} |
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/**
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*
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* @param result the result of the operation recently executed
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* @throws Exception
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*/
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protected void closeConnection(Object result) throws Exception { |
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this.getConnection().close();
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conn = null;
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} |
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} |