| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.dbutils; |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.sql.ResultSet; |
| import java.sql.ResultSetMetaData; |
| import java.sql.SQLException; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * MockResultSet dynamically implements the ResultSet interface. |
| */ |
| public class MockResultSet implements InvocationHandler { |
| |
| /** |
| * Create a {@code MockResultSet} proxy object. This is equivalent to: |
| * <pre> |
| * ProxyFactory.instance().createResultSet(new MockResultSet(metaData, rows)); |
| * </pre> |
| * |
| * @param metaData |
| * @param rows A null value indicates an empty {@code ResultSet}. |
| */ |
| public static ResultSet create(final ResultSetMetaData metaData, |
| final Object[][] rows) { |
| return ProxyFactory.instance().createResultSet( |
| new MockResultSet(metaData, rows)); |
| } |
| |
| private Object[] currentRow = null; |
| |
| private Iterator<Object[]> iter = null; |
| |
| private ResultSetMetaData metaData = null; |
| |
| private Boolean wasNull = Boolean.FALSE; |
| |
| /** |
| * MockResultSet constructor. |
| * @param metaData |
| * @param rows A null value indicates an empty {@code ResultSet}. |
| */ |
| public MockResultSet(final ResultSetMetaData metaData, final Object[][] rows) { |
| this.metaData = metaData; |
| if (rows == null) { |
| final List<Object[]> empty = Collections.emptyList(); |
| this.iter = empty.iterator(); |
| } else { |
| this.iter = Arrays.asList(rows).iterator(); |
| } |
| } |
| |
| /** |
| * The get* methods can have an int column index or a String column name as |
| * the parameter. This method handles both cases and returns the column |
| * index that the client is trying to get at. |
| * @param args |
| * @return A column index. |
| * @throws SQLException if a database access error occurs |
| */ |
| private int columnIndex(final Object[] args) throws SQLException { |
| |
| if (args[0] instanceof Integer) { |
| return ((Integer) args[0]).intValue(); |
| |
| } |
| if (args[0] instanceof String) { |
| return this.columnNameToIndex((String) args[0]); |
| |
| } |
| throw new SQLException(args[0] + " must be Integer or String"); |
| } |
| |
| /** |
| * Returns the column index for the given column name. |
| * @return A 1 based index |
| * @throws SQLException if the column name is invalid |
| */ |
| private int columnNameToIndex(final String columnName) throws SQLException { |
| for (int i = 0; i < this.currentRow.length; i++) { |
| final int c = i + 1; |
| if (this.metaData.getColumnName(c).equalsIgnoreCase(columnName)) { |
| return c; |
| } |
| } |
| |
| throw new SQLException(columnName + " is not a valid column name."); |
| } |
| |
| /** |
| * Gets the boolean value at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getBoolean(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| |
| try { |
| return (obj == null) |
| ? Boolean.FALSE |
| : Boolean.valueOf(obj.toString()); |
| |
| } catch (final NumberFormatException e) { |
| throw new SQLException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Gets the byte value at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getByte(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| |
| try { |
| return (obj == null) |
| ? Byte.valueOf((byte) 0) |
| : Byte.valueOf(obj.toString()); |
| |
| } catch (final NumberFormatException e) { |
| throw new SQLException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Gets the double value at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getDouble(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| |
| try { |
| return (obj == null) |
| ? new Double(0) |
| : Double.valueOf(obj.toString()); |
| |
| } catch (final NumberFormatException e) { |
| throw new SQLException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Gets the float value at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getFloat(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| |
| try { |
| return (obj == null) ? new Float(0) : Float.valueOf(obj.toString()); |
| |
| } catch (final NumberFormatException e) { |
| throw new SQLException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Gets the int value at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getInt(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| |
| try { |
| return (obj == null) |
| ? Integer.valueOf(0) |
| : Integer.valueOf(obj.toString()); |
| |
| } catch (final NumberFormatException e) { |
| throw new SQLException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Gets the long value at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getLong(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| |
| try { |
| return (obj == null) ? Long.valueOf(0) : Long.valueOf(obj.toString()); |
| |
| } catch (final NumberFormatException e) { |
| throw new SQLException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * @throws SQLException |
| */ |
| protected ResultSetMetaData getMetaData() throws SQLException { |
| return this.metaData; |
| } |
| |
| /** |
| * Gets the object at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getObject(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| return obj; |
| } |
| |
| /** |
| * Gets the short value at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected Object getShort(final int columnIndex) throws SQLException { |
| final Object obj = this.currentRow[columnIndex - 1]; |
| this.setWasNull(obj); |
| |
| try { |
| return (obj == null) |
| ? Short.valueOf((short) 0) |
| : Short.valueOf(obj.toString()); |
| |
| } catch (final NumberFormatException e) { |
| throw new SQLException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Gets the String at the given column index. |
| * @param columnIndex A 1 based index. |
| * @throws SQLException if a database access error occurs |
| */ |
| protected String getString(final int columnIndex) throws SQLException { |
| final Object obj = this.getObject(columnIndex); |
| this.setWasNull(obj); |
| return (obj == null) ? null : obj.toString(); |
| } |
| |
| @Override |
| public Object invoke(final Object proxy, final Method method, final Object[] args) |
| throws Throwable { |
| |
| final String methodName = method.getName(); |
| |
| if (methodName.equals("getMetaData")) { |
| return this.getMetaData(); |
| |
| } |
| if (methodName.equals("next")) { |
| return this.next(); |
| |
| } |
| if (methodName.equals("previous")) { |
| |
| } else if (methodName.equals("close")) { |
| |
| } else if (methodName.equals("getBoolean")) { |
| return this.getBoolean(columnIndex(args)); |
| |
| } else if (methodName.equals("getByte")) { |
| return this.getByte(columnIndex(args)); |
| |
| } else if (methodName.equals("getDouble")) { |
| return this.getDouble(columnIndex(args)); |
| |
| } else if (methodName.equals("getFloat")) { |
| return this.getFloat(columnIndex(args)); |
| |
| } else if (methodName.equals("getInt")) { |
| return this.getInt(columnIndex(args)); |
| |
| } else if (methodName.equals("getLong")) { |
| return this.getLong(columnIndex(args)); |
| |
| } else if (methodName.equals("getObject")) { |
| return this.getObject(columnIndex(args)); |
| |
| } else if (methodName.equals("getShort")) { |
| return this.getShort(columnIndex(args)); |
| |
| } else if (methodName.equals("getString")) { |
| return this.getString(columnIndex(args)); |
| |
| } else if (methodName.equals("wasNull")) { |
| return this.wasNull(); |
| |
| } else if (methodName.equals("isLast")) { |
| return this.isLast(); |
| |
| } else if (methodName.equals("hashCode")) { |
| return Integer.valueOf(System.identityHashCode(proxy)); |
| |
| } else if (methodName.equals("toString")) { |
| return "MockResultSet " + System.identityHashCode(proxy); |
| |
| } else if (methodName.equals("equals")) { |
| return Boolean.valueOf(proxy == args[0]); |
| } |
| |
| throw new UnsupportedOperationException("Unsupported method: " + methodName); |
| } |
| |
| /** |
| * @throws SQLException |
| */ |
| protected Boolean isLast() throws SQLException { |
| return this.iter.hasNext() ? Boolean.FALSE : Boolean.TRUE; |
| } |
| |
| /** |
| * @throws SQLException |
| */ |
| protected Boolean next() throws SQLException { |
| if (!this.iter.hasNext()) { |
| return Boolean.FALSE; |
| } |
| this.currentRow = iter.next(); |
| return Boolean.TRUE; |
| } |
| |
| /** |
| * Assigns this.wasNull a Boolean value based on the object passed in. |
| * @param isNull |
| */ |
| private void setWasNull(final Object isNull) { |
| this.wasNull = (isNull == null) ? Boolean.TRUE : Boolean.FALSE; |
| } |
| |
| /** |
| * @throws SQLException |
| */ |
| protected Boolean wasNull() throws SQLException { |
| return this.wasNull; |
| } |
| } |