sqltool.java

hsql是很有名的嵌入式数据库

                    continue;
                }

                if (arg[i].substring(2).equals("stdinput")) {
                    noinput          = false;
                    stdinputOverride = Boolean.TRUE;

                    continue;
                }

                if (arg[i].substring(2).equals("noinput")) {
                    noinput          = true;
                    stdinputOverride = Boolean.FALSE;

                    continue;
                }

                if (arg[i].substring(2).equals("driver")) {
                    if (++i == arg.length) {
                        throw bcl;
                    }

                    driver = arg[i];

                    continue;
                }

                throw bcl;
            }

            if (!listMode) {
                if (++i == arg.length) {
                    throw bcl;
                }

                targetDb = arg[i];
            }

            int scriptIndex = 0;

            if (sqlText != null) {
                try {
                    tmpFile = File.createTempFile("sqltool-", ".sql");

                    //(new java.io.FileWriter(tmpFile)).write(sqlText);
                    java.io.FileWriter fw = new java.io.FileWriter(tmpFile);

                    fw.write("/* " + (new java.util.Date()) + ".  "
                             + SqlTool.class.getName()
                             + " command-line SQL. */\n\n");
                    fw.write(sqlText + '\n');
                    fw.flush();
                    fw.close();
                } catch (IOException ioe) {
                    exitMain(4, "Failed to write given sql to temp file: "
                             + ioe);

                    return;
                }
            }

            if (stdinputOverride != null) {
                noinput = !stdinputOverride.booleanValue();
            }

            interactive = (!noinput) && (arg.length <= i + 1);

            if (arg.length == i + 2 && arg[i + 1].equals("-")) {
                if (stdinputOverride == null) {
                    noinput = false;
                }
            } else if (arg.length > i + 1) {

                // I.e., if there are any SQL files specified.
                scriptFiles =
                    new File[arg.length - i - 1 + ((stdinputOverride == null ||!stdinputOverride.booleanValue()) ? 0
                                                                                                                 : 1)];

                if (debug) {
                    System.err.println("scriptFiles has "
                                       + scriptFiles.length + " elements");
                }

                while (i + 1 < arg.length) {
                    scriptFiles[scriptIndex++] = new File(arg[++i]);
                }

                if (stdinputOverride != null
                        && stdinputOverride.booleanValue()) {
                    scriptFiles[scriptIndex++] = null;
                    noinput                    = true;
                }
            }
        } catch (BadCmdline bcl) {
            exitMain(2, SYNTAX_MESSAGE);

            return;
        }

        RCData conData = null;

        try {
            conData = new RCData(new File((rcFile == null) ? DEFAULT_RCFILE
                                                           : rcFile), targetDb);
        } catch (Exception e) {
            exitMain(1, "Failed to retrieve connection info for database '"
                     + targetDb + "': " + e.getMessage());

            return;
        }

        if (listMode) {
            exitMain(0);

            return;
        }

        if (debug) {
            conData.report();
        }

        try {
            conn = conData.getConnection(
                driver, System.getProperty("sqlfile.charset"),
                System.getProperty("javax.net.ssl.trustStore"));

            conn.setAutoCommit(autoCommit);

            DatabaseMetaData md = null;

            if (interactive && (md = conn.getMetaData()) != null) {
                System.out.println("JDBC Connection established to a "
                                   + md.getDatabaseProductName() + " v. "
                                   + md.getDatabaseProductVersion()
                                   + " database as '" + md.getUserName()
                                   + "'.");
            }
        } catch (Exception e) {
            e.printStackTrace();

            // Let's not continue as if nothing is wrong.
            exitMain(10,
                     "Failed to get a connection to " + conData.url + " as "
                     + conData.username + ".  " + e.getMessage());

            return;
        }

        File[] emptyFileArray      = {};
        File[] singleNullFileArray = { null };
        File   autoFile            = null;

        if (interactive &&!noautoFile) {
            autoFile = new File(System.getProperty("user.home")
                                + "/auto.sql");

            if ((!autoFile.isFile()) ||!autoFile.canRead()) {
                autoFile = null;
            }
        }

        if (scriptFiles == null) {

            // I.e., if no SQL files given on command-line.
            // Input file list is either nothing or {null} to read stdin.
            scriptFiles = (noinput ? emptyFileArray
                                   : singleNullFileArray);
        }

        int numFiles = scriptFiles.length;

        if (tmpFile != null) {
            numFiles += 1;
        }

        if (autoFile != null) {
            numFiles += 1;
        }

        SqlFile[] sqlFiles = new SqlFile[numFiles];
        HashMap   userVars = new HashMap();

        if (varSettings != null) {
            int             equals;
            String          curSetting, var, val;
            StringTokenizer allvars = new StringTokenizer(varSettings, ",");

            while (allvars.hasMoreTokens()) {
                curSetting = allvars.nextToken().trim();
                equals     = curSetting.indexOf('=');

                if (equals < 1) {
                    exitMain(24, "Var settings not of format NAME=var[,...]");

                    return;
                }

                var = curSetting.substring(0, equals).trim();
                val = curSetting.substring(equals + 1).trim();

                if (var.length() < 1 || val.length() < 1) {
                    exitMain(24, "Var settings not of format NAME=var[,...]");

                    return;
                }

                userVars.put(var, val);
            }
        }

        // We print version before execing this one.
        int interactiveFileIndex = -1;

        try {
            int fileIndex = 0;

            if (autoFile != null) {
                sqlFiles[fileIndex++] = new SqlFile(autoFile, false,
                                                    userVars);
            }

            if (tmpFile != null) {
                sqlFiles[fileIndex++] = new SqlFile(tmpFile, false, userVars);
            }

            for (int j = 0; j < scriptFiles.length; j++) {
                if (interactiveFileIndex < 0 && interactive) {
                    interactiveFileIndex = fileIndex;
                }

                sqlFiles[fileIndex++] = new SqlFile(scriptFiles[j],
                                                    interactive, userVars);
            }
        } catch (IOException ioe) {
            try {
                conn.close();
            } catch (Exception e) {}

            exitMain(2, ioe.getMessage());

            return;
        }

        int retval = 0;    // Value we will return via System.exit().

        try {
            for (int j = 0; j < sqlFiles.length; j++) {
                if (j == interactiveFileIndex) {
                    System.out.print("SqlTool v. " + revnum
                                     + ".                        ");
                }

                sqlFiles[j].execute(conn, coeOverride);
            }
        } catch (IOException ioe) {
            System.err.println("Failed to execute SQL:  " + ioe.getMessage());

            retval = 3;

            // These two Exception types are handled properly inside of SqlFile.
            // We just need to return an appropriate error status.
        } catch (SqlToolError ste) {
            retval = 2;

            // Should not be handling SQLExceptions here!  SqlFile should handle
            // them.
        } catch (SQLException se) {
            retval = 1;
        } finally {
            try {
                conn.close();
            } catch (Exception e) {}
        }

        // Taking file removal out of final block because this is good debug
        // info to keep around if the program aborts.
        if (tmpFile != null &&!tmpFile.delete()) {
            System.err.println(
                "Error occurred while trying to remove temp file '" + tmpFile
                + "'");
        }

        exitMain(retval);

        return;
    }
}