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Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/ResultSetIterator.java')
-rw-r--r--jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/ResultSetIterator.java154
1 files changed, 0 insertions, 154 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/ResultSetIterator.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/ResultSetIterator.java
deleted file mode 100644
index a8da8442ab..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/iterators/ResultSetIterator.java
+++ /dev/null
@@ -1,154 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2007 Oracle. All rights reserved.
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0, which accompanies this distribution
- * and is available at http://www.eclipse.org/legal/epl-v10.html.
- *
- * Contributors:
- * Oracle - initial API and implementation
- ******************************************************************************/
-package org.eclipse.jpt.utility.internal.iterators;
-
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.Iterator;
-import java.util.NoSuchElementException;
-import org.eclipse.jpt.utility.internal.StringTools;
-
-/**
- * A <code>ResultSetIterator</code> wraps a <code>ResultSet</code>
- * and transforms its rows for client consumption. Subclasses can override
- * <code>#buildNext(ResultSet)</code> to build the expected object from
- * the current row of the result set.
- * <p>
- * To use, supply:<ul>
- * <li> a <code>ResultSet</code>
- * <li> an <code>Adapter</code> that converts a row in the <code>ResultSet</code>
- * into the desired object
- * (alternatively, subclass <code>ResultSetIterator</code>
- * and override the <code>buildNext(ResultSet)</code> method)
- * </ul>
- * <p>
- */
-public class ResultSetIterator<E>
- implements Iterator<E>
-{
- private final ResultSet resultSet;
- private final Adapter<E> adapter;
- private E next;
- private boolean done;
-
-
- /**
- * Construct an iterator on the specified result set that returns
- * the objects produced by the specified adapter.
- */
- public ResultSetIterator(ResultSet resultSet, Adapter<E> adapter) {
- super();
- this.resultSet = resultSet;
- this.adapter = adapter;
- this.done = false;
- this.next = this.buildNext();
- }
-
- /**
- * Construct an iterator on the specified result set that returns
- * the first object in each row of the result set.
- */
- public ResultSetIterator(ResultSet resultSet) {
- this(resultSet, Adapter.Default.<E>instance());
- }
-
- /**
- * Build the next object for the iterator to return.
- * Close the result set when we reach the end.
- */
- private E buildNext() {
- try {
- if (this.resultSet.next()) {
- return this.buildNext(this.resultSet);
- }
- this.resultSet.close();
- this.done = true;
- return null;
- } catch (SQLException ex) {
- throw new RuntimeException(ex);
- }
- }
-
- /**
- * By default, return the first object in the current row
- * of the result set. Any <code>SQLException</code>s will
- * be caught and wrapped in a <code>RuntimeException</code>.
- */
- protected E buildNext(ResultSet rs) throws SQLException {
- return this.adapter.buildNext(rs);
- }
-
- public boolean hasNext() {
- return ! this.done;
- }
-
- public E next() {
- if (this.done) {
- throw new NoSuchElementException();
- }
- E temp = this.next;
- this.next = this.buildNext();
- return temp;
- }
-
- public void remove() {
- throw new UnsupportedOperationException();
- }
-
- @Override
- public String toString() {
- return StringTools.buildToStringFor(this, this.resultSet);
- }
-
-
- // ********** interface **********
-
- /**
- * Used by <code>ResultSetIterator</code> to convert a
- * <code>ResultSet</code>'s current row into the next object
- * to be returned by the <code>Iterator</code>.
- */
- public interface Adapter<T> {
-
- /**
- * Return an object corresponding to the result set's
- * "current" row. Any <code>SQLException</code>s will
- * be caught and wrapped in a <code>RuntimeException</code>.
- * @see java.sql.ResultSet
- */
- T buildNext(ResultSet rs) throws SQLException;
-
-
- final class Default<S> implements Adapter<S> {
- @SuppressWarnings("unchecked")
- public static final Adapter INSTANCE = new Default();
- @SuppressWarnings("unchecked")
- public static <R> Adapter<R> instance() {
- return INSTANCE;
- }
- // ensure single instance
- private Default() {
- super();
- }
- // return the first object in the current row of the result set
- @SuppressWarnings("unchecked")
- public S buildNext(ResultSet rs) throws SQLException {
- // result set columns are indexed starting with 1
- return (S) rs.getObject(1);
- }
- @Override
- public String toString() {
- return "ResultSetIterator.Adapter.Default";
- }
- }
-
- }
-
-}

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