Commons Beanutils example source code file (TestResultSetMetaData.java)

This example Commons Beanutils source code file (TestResultSetMetaData.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons Beanutils tags/keywords

class, classloader, integer, integer, jdbc, object, reflection, resultsetmetadata, sql, sqlexception, sqlexception, string, string, testresultsetmetadata, throwable, unsupportedoperationexception, unsupportedoperationexception

The Commons Beanutils TestResultSetMetaData.java source code

/*
 * 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.beanutils;


import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Types;


/**
 * <p>Mock object that implements enough of
 * <code>java.sql.ResultSetMetaData
 * to exercise the {@link ResultSetDynaClass} functionality.</p>
 *
 * @author Craig R. McClanahan
 * @version $Revision: 561644 $ $Date: 2007-08-01 05:31:50 +0100 (Wed, 01 Aug 2007) $
 */

public class TestResultSetMetaData implements InvocationHandler {


    // ----------------------------------------------------- Instance Variables


    /**
     * <p>Array of column names and class names for metadata.

     */
    protected String metadata[][] = {
        { "bigDecimalProperty", java.math.BigDecimal.class.getName() },
        { "booleanProperty", Boolean.class.getName() },
        { "byteProperty", Byte.class.getName() },
        { "dateProperty", java.sql.Date.class.getName() },
        { "doubleProperty", Double.class.getName() },
        { "floatProperty", Float.class.getName() },
        { "intProperty", Integer.class.getName() },
        { "longProperty", Long.class.getName() },
        { "nullProperty", String.class.getName() },
        { "shortProperty", Short.class.getName() },
        { "stringProperty", String.class.getName() },
        { "timeProperty", java.sql.Time.class.getName() },
        { "timestampProperty", java.sql.Timestamp.class.getName() },
    };


    /**
     * Factory method for creating {@link ResultSetMetaData} proxies.
     *
     * @return A result set meta data proxy
     */
    public static ResultSetMetaData createProxy() {
        return TestResultSetMetaData.createProxy(new TestResultSetMetaData());
    }

    /**
     * Factory method for creating {@link ResultSetMetaData} proxies.
     * @param invocationHandler Invocation Handler
     * @return A result set meta data proxy
     */
    public static ResultSetMetaData createProxy(InvocationHandler invocationHandler) {
        ClassLoader classLoader = ResultSetMetaData.class.getClassLoader();
        Class[] interfaces = new Class[] { ResultSetMetaData.class };
        return (ResultSetMetaData)Proxy.newProxyInstance(classLoader, interfaces, invocationHandler);
    }

    /**
     * Handles method invocation on the {@link ResultSetMetaData} proxy. 
     *
     * @param proxy The proxy ResultSet object
     * @param method the method being invoked
     * @param args The method arguments
     * @return The result of invoking the method.
     * @throws Throwable if an error occurs.
     */
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        String methodName = method.getName();
        if ("getColumnClassName".equals(methodName)) {
            return getColumnClassName(((Integer)args[0]).intValue());
        } if ("getColumnCount".equals(methodName)) {
            return new Integer(getColumnCount());
        } if ("getColumnName".equals(methodName)) {
            return getColumnName(((Integer)args[0]).intValue());
        } if ("getColumnType".equals(methodName)) {
            return getColumnType(((Integer)args[0]).intValue());
        }
        
        throw new UnsupportedOperationException(methodName + " not implemented");
    }

    // ---------------------------------------------------- Implemented Methods


    public String getColumnClassName(int columnIndex) throws SQLException {
        return (metadata[columnIndex - 1][1]);
    }


    public int getColumnCount() throws SQLException {
        return (metadata.length);
    }

    public String getColumnName(int columnIndex) throws SQLException {
        return (metadata[columnIndex - 1][0]);
    }


    public Integer getColumnType(int columnIndex) throws SQLException {
        String columnName = getColumnName(columnIndex);
        int sqlType = Types.OTHER;
        if (columnName.equals("bigDecimalProperty")) {
            sqlType = Types.DECIMAL;
// Types.BOOLEAN only introduced in JDK 1.4
//        } else if (columnName.equals("booleanProperty")) {
//            sqlType = Types.BOOLEAN;
        } else if (columnName.equals("byteProperty")) {
            sqlType = Types.TINYINT;
        } else if (columnName.equals("dateProperty")) {
            sqlType = Types.DATE;
        } else if (columnName.equals("doubleProperty")) {
            sqlType = Types.DOUBLE;
        } else if (columnName.equals("floatProperty")) {
            sqlType = Types.FLOAT;
        } else if (columnName.equals("intProperty")) {
            sqlType = Types.INTEGER;
        } else if (columnName.equals("longProperty")) {
            sqlType = Types.BIGINT;
        } else if (columnName.equals("nullProperty")) {
            sqlType = Types.VARCHAR;
        } else if (columnName.equals("shortProperty")) {
            sqlType = Types.SMALLINT;
        } else if (columnName.equals("stringProperty")) {
            sqlType = Types.VARCHAR;
        } else if (columnName.equals("timeProperty")) {
            sqlType = Types.TIME;
        } else if (columnName.equals("timestampProperty")) {
            sqlType = Types.TIMESTAMP;
        } else {
            sqlType = Types.OTHER;
        }
        return new Integer(sqlType);
    }


    // -------------------------------------------------- Unimplemented Methods


    public String getCatalogName(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public int getColumnDisplaySize(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public String getColumnLabel(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public String getColumnTypeName(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public int getPrecision(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public int getScale(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public String getSchemaName(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public String getTableName(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isAutoIncrement(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isCaseSensitive(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isCurrency(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isDefinitelyWritable(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public int isNullable(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isReadOnly(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isSearchable(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isSigned(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


    public boolean isWritable(int columnIndex) throws SQLException {
        throw new UnsupportedOperationException();
    }


}