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 / impl / ResulSetControlerBase.java @ 43020
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package org.gvsig.fmap.dal.store.jdbc2.impl; |
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import java.sql.Connection; |
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import java.sql.PreparedStatement; |
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import java.sql.ResultSet; |
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import java.sql.SQLException; |
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import java.sql.Statement; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.store.jdbc.exception.JDBCExecutePreparedSQLException; |
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import org.gvsig.fmap.dal.store.jdbc2.JDBCHelper; |
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import org.gvsig.fmap.dal.store.jdbc2.JDBCUtils; |
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import org.gvsig.fmap.dal.store.jdbc2.ResulSetControler; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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public class ResulSetControlerBase implements ResulSetControler { |
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final static private Logger logger = LoggerFactory.getLogger(ResulSetControlerBase.class); |
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public class ResultSetEntryBase implements ResultSetEntry { |
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private ResultSet resultSet = null; |
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private final int id; |
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private long lastUse = 0; |
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private String sql; |
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public ResultSetEntryBase(ResultSet resulSet) { |
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this(resulSet,null); |
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} |
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public ResultSetEntryBase(ResultSet resulSet, String sql) { |
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this.resultSet = resulSet;
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this.id = nextid++;
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this.sql = sql;
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used(); |
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resulSets.put(this.getID(), this); |
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} |
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private void used() { |
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lastUse = System.currentTimeMillis();
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} |
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@Override
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public ResultSet get() { |
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used(); |
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return resultSet;
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} |
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@Override
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public int getID() { |
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return this.id; |
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} |
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@Override
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public boolean isZombie() { |
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if( this.resultSet == null ) { |
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return true; |
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} |
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return System.currentTimeMillis() - lastUse > mlsecondsToZombie; |
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} |
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@Override
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public String getSQL() { |
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return this.sql; |
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} |
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@Override
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public Object getObject(int columnIndex) throws SQLException { |
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used(); |
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return this.resultSet.getObject(columnIndex); |
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} |
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@Override
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public byte[] getBytes(int columnIndex) throws SQLException { |
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used(); |
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return this.resultSet.getBytes(columnIndex); |
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} |
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@Override
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public boolean next() throws SQLException { |
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return this.resultSet.next(); |
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} |
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@Override
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public void close() throws Exception { |
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if( this.resultSet == null ) { |
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// Already close
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return;
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} |
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Statement st = null; |
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Connection con = null; |
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try {
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resulSets.remove(this.getID());
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st = this.resultSet.getStatement();
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if( st != null ) { |
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con = st.getConnection(); |
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} |
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} catch(Exception ex) { |
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logger.warn("Problems closing ResulSetEntryBase.",ex);
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} |
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JDBCUtils.closeQuietly(this.resultSet);
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JDBCUtils.closeQuietly(st); |
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JDBCUtils.closeQuietly(con); |
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this.resultSet = null; |
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logger.debug( |
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"Close ResulSetEntryBase id {} (total {})",
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this.getID(),
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getOpenCount() |
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); |
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pack(); |
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} |
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} |
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private int nextid = 1; |
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private Map<Integer, ResultSetEntryBase> resulSets; |
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private long mlsecondsToZombie = 1000 * 60 * 10; // 10 Min |
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private JDBCHelper helper = null; |
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public ResulSetControlerBase(JDBCHelper helper) {
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this.helper = helper;
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this.resulSets = new HashMap<>(); |
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this.nextid = 1; |
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} |
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@Override
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public long getTimeToZombie() { |
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return mlsecondsToZombie;
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} |
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@Override
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public void setTimeToZombie(long mlSeconds) { |
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mlsecondsToZombie = mlSeconds; |
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} |
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@Override
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public void close() throws Exception { |
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this.closeAll();
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this.helper = null; |
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this.resulSets = null; |
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this.nextid = -10; |
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} |
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@Override
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public ResultSetEntryBase create(String sql, int fetchSize) throws DataException { |
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return create(sql, null, fetchSize); |
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} |
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@Override
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public synchronized ResultSetEntryBase create( |
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final String sql, |
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final List values, |
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final int fetchSize) throws DataException { |
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this.pack();
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ResultSet rs = null; |
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Connection conn = null; |
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PreparedStatement st = null; |
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try {
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conn = helper.getConnection(); |
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conn.setAutoCommit(false);
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st = conn.prepareStatement(sql); |
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JDBCUtils.setObjects(st, values, helper.getGeometrySupportType()); |
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if (fetchSize > 0) { |
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st.setFetchSize(fetchSize); |
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} |
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rs = JDBCUtils.executeQuery(st, sql); |
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if (fetchSize > 0) { |
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rs.setFetchSize(fetchSize); |
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} |
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} catch (SQLException e) { |
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JDBCUtils.closeQuietly(rs); |
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JDBCUtils.closeQuietly(st); |
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JDBCUtils.closeQuietly(conn); |
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throw new JDBCExecutePreparedSQLException(sql, values, e); |
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} |
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ResultSetEntryBase rsentry = new ResultSetEntryBase(rs, sql);
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return rsentry;
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} |
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@Override
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public synchronized void closeAll() { |
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// Para evitar problemas de concurrencia al eliminar elementos del
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// map mientras lo recorremos, cargamos las entredas en un List
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List<ResultSetEntryBase> entries = new ArrayList<>(); |
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entries.addAll(this.resulSets.values());
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for (ResultSetEntryBase entry : entries) {
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JDBCUtils.closeQuietly(entry); |
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} |
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} |
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@Override
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public synchronized void pack() { |
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// Para evitar problemas de concurrencia al eliminar elementos del
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// map mientras lo recorremos, cargamos las entredas en un List
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List<ResultSetEntryBase> entries = new ArrayList<>(); |
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entries.addAll(this.resulSets.values());
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int maxID = 0; |
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for (ResultSetEntryBase entry : entries) {
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if (entry.isZombie()) {
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JDBCUtils.closeQuietly(entry); |
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} else {
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if (entry.getID() > maxID) {
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maxID = entry.getID(); |
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} |
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} |
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} |
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this.nextid = maxID + 1; |
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} |
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@Override
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public synchronized int getOpenCount() { |
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return this.resulSets.size(); |
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} |
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} |