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annotate src/main/java/nl/cwi/monetdb/util/Exporter.java @ 261:d4baf8a4b43a

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Update Copyright year to 2019
author Martin van Dinther <martin.van.dinther@monetdbsolutions.com>
date Thu, 03 Jan 2019 14:43:44 +0100 (2019-01-03)
parents c38d4eaf5479
children 4face9f42efc 05549bc7ed26
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1 /*
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2 * This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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5 *
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6 * Copyright 1997 - July 2008 CWI, August 2008 - 2019 MonetDB B.V.
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7 */
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8
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9 package nl.cwi.monetdb.util;
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11 import java.io.PrintWriter;
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12 import java.sql.DatabaseMetaData;
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13 import java.sql.ResultSet;
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14 import java.sql.SQLException;
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15 import java.util.Arrays;
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16
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17 public abstract class Exporter {
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18 protected PrintWriter out;
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19 protected boolean useSchema;
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20
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21 protected Exporter(PrintWriter out) {
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22 this.out = out;
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23 }
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25 public abstract void dumpSchema(
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26 DatabaseMetaData dbmd,
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27 String type,
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28 String catalog,
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29 String schema,
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30 String name) throws SQLException;
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31
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32 public abstract void dumpResultSet(ResultSet rs) throws SQLException;
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34 public abstract void setProperty(int type, int value) throws Exception;
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35 public abstract int getProperty(int type) throws Exception;
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37 //=== shared utilities
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39 public void useSchemas(boolean use) {
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40 useSchema = use;
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41 }
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43 /**
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44 * returns the given string between two double quotes for usage as
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45 * identifier such as column or table name in SQL queries.
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46 *
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47 * @param in the string to quote
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48 * @return the quoted string
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49 */
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50 protected static String dq(String in) {
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51 return "\"" + in.replaceAll("\\\\", "\\\\\\\\").replaceAll("\"", "\\\\\"") + "\"";
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52 }
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53
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54 /**
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55 * returns the given string between two single quotes for usage as
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56 * string literal in SQL queries.
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57 *
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58 * @param in the string to quote
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59 * @return the quoted string
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60 */
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61 protected static String q(String in) {
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62 return "'" + in.replaceAll("\\\\", "\\\\\\\\").replaceAll("'", "\\\\'") + "'";
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63 }
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64
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65 /**
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66 * Simple helper function to repeat a given character a number of
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67 * times.
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68 *
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69 * @param chr the character to repeat
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70 * @param cnt the number of times to repeat chr
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71 * @return a String holding cnt times chr
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72 */
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73 protected static String repeat(char chr, int cnt) {
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74 char[] buf = new char[cnt];
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75 Arrays.fill(buf, chr);
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76 return new String(buf);
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77 }
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78 }