com.twelvemonkeys.sql.SQLUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2008, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.sql;
import com.twelvemonkeys.lang.StringUtil;
import java.sql.*;
import java.io.*;
import java.util.Properties;
/**
* A class used to test a JDBC database connection. It can also be used as a
* really simple form of command line SQL interface, that passes all command
* line parameters to the database as plain SQL, and returns all rows to
* Sytem.out. Be aware that the wildcard character (*) is intercepted by
* the console, so you have to quote your string, or escape the wildcard
* character, otherwise you may get unpredictable results.
*
* Exmaple use
*
*
* $ java -cp lib\jconn2.jar;build com.twelvemonkeys.sql.SQLUtil
* -d com.sybase.jdbc2.jdbc.SybDriver -u "jdbc:sybase:Tds:10.248.136.42:6100"
* -l scott -p tiger "SELECT * FROM emp"
* Make sure sure to include the path to your JDBC driver in the java class
* path!
*
* @author Philippe B?al ([email protected])
* @author Harald Kuhr ([email protected])
* @author last modified by $author: WMHAKUR $
* @version $id: $
* @see DatabaseConnection
*/
public class SQLUtil {
/**
* Method main
*
* @param pArgs
* @throws SQLException
*
* @todo Refactor the long and ugly main method...
* Consider: - extract method parserArgs(String[])::Properties (how do we
* get the rest of the arguments? getProperty("_ARGV")?
* Make the Properties/Map an argument and return int with last
* option index?
* - extract method getStatementReader(Properties)
*/
public static void main(String[] pArgs) throws SQLException, IOException {
String user = null;
String password = null;
String url = null;
String driver = null;
String configFileName = null;
String scriptFileName = null;
String scriptSQLDelim = "go";
int argIdx = 0;
boolean errArgs = false;
while ((argIdx < pArgs.length) && (pArgs[argIdx].charAt(0) == '-') && (pArgs[argIdx].length() >= 2)) {
if ((pArgs[argIdx].charAt(1) == 'l') || pArgs[argIdx].equals("--login")) {
argIdx++;
user = pArgs[argIdx++];
}
else if ((pArgs[argIdx].charAt(1) == 'p') || pArgs[argIdx].equals("--password")) {
argIdx++;
password = pArgs[argIdx++];
}
else if ((pArgs[argIdx].charAt(1) == 'u') || pArgs[argIdx].equals("--url")) {
argIdx++;
url = pArgs[argIdx++];
}
else if ((pArgs[argIdx].charAt(1) == 'd') || pArgs[argIdx].equals("--driver")) {
argIdx++;
driver = pArgs[argIdx++];
}
else if ((pArgs[argIdx].charAt(1) == 'c') || pArgs[argIdx].equals("--config")) {
argIdx++;
configFileName = pArgs[argIdx++];
}
else if ((pArgs[argIdx].charAt(1) == 's') || pArgs[argIdx].equals("--script")) {
argIdx++;
scriptFileName = pArgs[argIdx++];
}
else if ((pArgs[argIdx].charAt(1) == 'h') || pArgs[argIdx].equals("--help")) {
argIdx++;
errArgs = true;
}
else {
System.err.println("Unknown option \"" + pArgs[argIdx++] + "\"");
}
}
if (errArgs || (scriptFileName == null && (pArgs.length < (argIdx + 1)))) {
System.err.println("Usage: SQLUtil [--help|-h] [--login|-l ] [--password|-p ] [--driver|-d ] [--url|-u ] [--config|-c ] [--script|-s ] ");
System.exit(5);
}
// If config file, read config and use as defaults
// NOTE: Command line options override!
if (!StringUtil.isEmpty(configFileName)) {
Properties config = new Properties();
File configFile = new File(configFileName);
if (!configFile.exists()) {
System.err.println("Config file " + configFile.getAbsolutePath() + " does not exist.");
System.exit(10);
}
InputStream in = new FileInputStream(configFile);
try {
config.load(in);
}
finally {
in.close();
}
if (driver == null) {
driver = config.getProperty("driver");
}
if (url == null) {
url = config.getProperty("url");
}
if (user == null) {
user = config.getProperty("login");
}
if (password == null) {
password = config.getProperty("password");
}
}
// Register JDBC driver
if (driver != null) {
registerDriver(driver);
}
Connection conn = null;
try {
// Use default connection from DatabaseConnection.properties
conn = DatabaseConnection.getConnection(user, password, url);
if (conn == null) {
System.err.println("No connection.");
System.exit(10);
}
BufferedReader reader;
if (scriptFileName != null) {
// Read SQL from file
File file = new File(scriptFileName);
if (!file.exists()) {
System.err.println("Script file " + file.getAbsolutePath() + " does not exist.");
System.exit(10);
}
reader = new BufferedReader(new FileReader(file));
}
else {
// Create SQL statement from command line params
StringBuilder sql = new StringBuilder();
for (int i = argIdx; i < pArgs.length; i++) {
sql.append(pArgs[i]).append(" ");
}
reader = new BufferedReader(new StringReader(sql.toString()));
}
//reader.mark(10000000);
//for (int i = 0; i < 5; i++) {
StringBuilder sql = new StringBuilder();
while (true) {
// Read next line
String line = reader.readLine();
if (line == null) {
// End of file, execute and quit
String str = sql.toString();
if (!StringUtil.isEmpty(str)) {
executeSQL(str, conn);
}
break;
}
else if (line.trim().endsWith(scriptSQLDelim)) {
// End of statement, execute and continue
sql.append(line.substring(0, line.lastIndexOf(scriptSQLDelim)));
executeSQL(sql.toString(), conn);
sql.setLength(0);
}
else {
sql.append(line).append(" ");
}
}
//reader.reset();
//}
}
finally {
// Close the connection
if (conn != null) {
conn.close();
}
}
}
private static void executeSQL(String pSQL, Connection pConn) throws SQLException {
System.out.println("Executing: " + pSQL);
Statement stmt = null;
try {
// NOTE: Experimental
//stmt = pConn.prepareCall(pSQL);
//boolean results = ((CallableStatement) stmt).execute();
// Create statement and execute
stmt = pConn.createStatement();
boolean results = stmt.execute(pSQL);
int updateCount = -1;
SQLWarning warning = stmt.getWarnings();
while (warning != null) {
System.out.println("Warning: " + warning.getMessage());
warning = warning.getNextWarning();
}
// More result sets to process?
while (results || (updateCount = stmt.getUpdateCount()) != -1) {
// INSERT, UPDATE or DELETE statement (no result set).
if (!results && (updateCount >= 0)) {
System.out.println("Operation successfull. " + updateCount + " row" + ((updateCount != 1) ? "s" : "") + " affected.");
System.out.println();
}
// SELECT statement or stored procedure
else {
processResultSet(stmt.getResultSet());
}
// More results?
results = stmt.getMoreResults();
}
}
catch (SQLException sqle) {
System.err.println("Error: " + sqle.getMessage());
while ((sqle = sqle.getNextException()) != null) {
System.err.println(" " + sqle);
}
}
finally {
// Close the statement
if (stmt != null) {
stmt.close();
}
}
}
// TODO: Create interface ResultSetProcessor
// -- processWarnings(SQLWarning pWarnings);
// -- processMetaData(ResultSetMetaData pMetas); ??
// -- processResultSet(ResultSet pResult);
// TODO: Add parameter pResultSetProcessor to method
// TODO: Extract contents of this method to class Default/CLIRSP
// TODO: Create new class JTableRSP that creates (?) and populates a JTable
// or a TableModel (?)
private static void processResultSet(ResultSet pResultSet) throws SQLException {
try {
// Get meta data
ResultSetMetaData meta = pResultSet.getMetaData();
// Print any warnings that might have occured
SQLWarning warning = pResultSet.getWarnings();
while (warning != null) {
System.out.println("Warning: " + warning.getMessage());
warning = warning.getNextWarning();
}
// Get the number of columns in the result set
int numCols = meta.getColumnCount();
for (int i = 1; i <= numCols; i++) {
boolean prepend = isNumeric(meta.getColumnType(i));
String label = maybePad(meta.getColumnLabel(i), meta.getColumnDisplaySize(i), " ", prepend);
System.out.print(label + "\t");
}
System.out.println();
for (int i = 1; i <= numCols; i++) {
boolean prepend = isNumeric(meta.getColumnType(i));
String label = maybePad("(" + meta.getColumnTypeName(i) + "/" + meta.getColumnClassName(i) + ")", meta.getColumnDisplaySize(i), " ", prepend);
System.out.print(label + "\t");
}
System.out.println();
for (int i = 1; i <= numCols; i++) {
String label = maybePad("", meta.getColumnDisplaySize(i), "-", false);
System.out.print(label + "\t");
}
System.out.println();
while (pResultSet.next()) {
for (int i = 1; i <= numCols; i++) {
boolean prepend = isNumeric(meta.getColumnType(i));
String value = maybePad(String.valueOf(pResultSet.getString(i)), meta.getColumnDisplaySize(i), " ", prepend);
System.out.print(value + "\t");
//System.out.print(pResultSet.getString(i) + "\t");
}
System.out.println();
}
System.out.println();
}
catch (SQLException sqle) {
System.err.println("Error: " + sqle.getMessage());
while ((sqle = sqle.getNextException()) != null) {
System.err.println(" " + sqle);
}
throw sqle;
}
finally {
if (pResultSet != null) {
pResultSet.close();
}
}
}
private static String maybePad(String pString, int pColumnDisplaySize, String pPad, boolean pPrepend) {
String padded;
if (pColumnDisplaySize < 100) {
padded = StringUtil.pad(pString, pColumnDisplaySize, pPad, pPrepend);
}
else {
padded = StringUtil.pad(pString, 100, pPad, pPrepend);
}
return padded;
}
private static boolean isNumeric(int pColumnType) {
return (pColumnType == Types.INTEGER || pColumnType == Types.DECIMAL
|| pColumnType == Types.TINYINT || pColumnType == Types.BIGINT
|| pColumnType == Types.DOUBLE || pColumnType == Types.FLOAT
|| pColumnType == Types.NUMERIC || pColumnType == Types.REAL
|| pColumnType == Types.SMALLINT);
}
public static boolean isDriverAvailable(String pDriver) {
//ClassLoader loader = Thread.currentThread().getContextClassLoader();
try {
Class.forName(pDriver, false, null); // null means the caller's ClassLoader
return true;
}
catch (ClassNotFoundException ignore) {
// Ignore
}
return false;
}
public static void registerDriver(String pDriver) {
// Register JDBC driver
try {
Class.forName(pDriver).newInstance();
}
catch (ClassNotFoundException e) {
throw new RuntimeException("Driver class not found: " + e.getMessage(), e);
//System.err.println("Driver class not found: " + e.getMessage());
//System.exit(5);
}
catch (InstantiationException e) {
throw new RuntimeException("Driver class could not be instantiated: " + e.getMessage(), e);
//System.err.println("Driver class could not be instantiated: " + e.getMessage());
//System.exit(5);
}
catch (IllegalAccessException e) {
throw new RuntimeException("Driver class could not be instantiated: " + e.getMessage(), e);
//System.err.println("Driver class could not be instantiated: " + e.getMessage());
//System.exit(5);
}
}
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