| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| SqlSplitter |
|
| 13.0;13 |
| 1 | package org.codehaus.mojo.sql; | |
| 2 | ||
| 3 | /* | |
| 4 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 5 | * or more contributor license agreements. See the NOTICE file | |
| 6 | * distributed with this work for additional information | |
| 7 | * regarding copyright ownership. The ASF licenses this file | |
| 8 | * to you under the Apache License, Version 2.0 (the | |
| 9 | * "License"); you may not use this file except in compliance | |
| 10 | * with the License. You may obtain a copy of the License at | |
| 11 | * | |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 13 | * | |
| 14 | * Unless required by applicable law or agreed to in writing, | |
| 15 | * software distributed under the License is distributed on an | |
| 16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 17 | * KIND, either express or implied. See the License for the | |
| 18 | * specific language governing permissions and limitations | |
| 19 | * under the License. | |
| 20 | */ | |
| 21 | ||
| 22 | import org.codehaus.plexus.util.StringUtils; | |
| 23 | ||
| 24 | /** | |
| 25 | * Utility class to split a long sql batch script into single SQL commands. | |
| 26 | */ | |
| 27 | 0 | public class SqlSplitter |
| 28 | { | |
| 29 | /** | |
| 30 | * Value indicating the sql has no end-delimiter like i.e. semicolon | |
| 31 | */ | |
| 32 | public static final int NO_END = -1; | |
| 33 | ||
| 34 | /** | |
| 35 | * Check if the given sql line contains an end of command ';' | |
| 36 | * Please note that we do <em>not</em> fully parse the SQL, | |
| 37 | * so if we get a malformed statement, we cannot detect it. | |
| 38 | * | |
| 39 | * @param line to parse | |
| 40 | * @param delimiter which should be used to split SQL commands | |
| 41 | * @return position after the end character if the given line contains the end of a SQL script, | |
| 42 | * {@value SqlSplitter#NO_END} } if it doesn't contain an end char. | |
| 43 | */ | |
| 44 | public static int containsSqlEnd( String line, String delimiter ) | |
| 45 | { | |
| 46 | // / * * / comments | |
| 47 | 0 | boolean isComment = false; |
| 48 | ||
| 49 | 0 | boolean isAlphaDelimiter = StringUtils.isAlpha( delimiter ); |
| 50 | ||
| 51 | 0 | if ( line == null || line.length() == 0 ) |
| 52 | { | |
| 53 | 0 | return NO_END; |
| 54 | } | |
| 55 | ||
| 56 | 0 | int pos = 0; |
| 57 | ||
| 58 | do | |
| 59 | { | |
| 60 | 0 | if ( isComment ) |
| 61 | { | |
| 62 | 0 | if ( line.startsWith( "*/", pos ) ) |
| 63 | { | |
| 64 | 0 | isComment = false; |
| 65 | } | |
| 66 | else | |
| 67 | { | |
| 68 | 0 | pos++; |
| 69 | 0 | continue; |
| 70 | } | |
| 71 | } | |
| 72 | ||
| 73 | 0 | if ( line.startsWith( "/*", pos ) ) |
| 74 | { | |
| 75 | 0 | isComment = true; |
| 76 | 0 | pos += 2; |
| 77 | 0 | continue; |
| 78 | } | |
| 79 | ||
| 80 | 0 | if ( line.startsWith( "--", pos ) ) |
| 81 | { | |
| 82 | 0 | return NO_END; |
| 83 | } | |
| 84 | ||
| 85 | 0 | if ( line.startsWith( "'", pos ) || line.startsWith( "\"", pos ) ) |
| 86 | { | |
| 87 | 0 | String quoteChar = "" + line.charAt( pos ); |
| 88 | 0 | String quoteEscape = "\\" + quoteChar; |
| 89 | 0 | pos++; |
| 90 | ||
| 91 | 0 | if ( line.length() <= pos ) |
| 92 | { | |
| 93 | 0 | return NO_END; |
| 94 | } | |
| 95 | ||
| 96 | do | |
| 97 | { | |
| 98 | 0 | if ( line.startsWith( quoteEscape, pos ) ) |
| 99 | { | |
| 100 | 0 | pos += 2; |
| 101 | } | |
| 102 | 0 | } while ( !line.startsWith( quoteChar, pos++ ) ); |
| 103 | ||
| 104 | 0 | continue; |
| 105 | } | |
| 106 | ||
| 107 | 0 | if ( line.startsWith( delimiter, pos ) ) |
| 108 | { | |
| 109 | 0 | if ( isAlphaDelimiter ) |
| 110 | { | |
| 111 | // check if delimiter is at start or end of line, surrounded | |
| 112 | // by non-alpha character | |
| 113 | 0 | if ( ( pos == 0 || !isAlpha( line.charAt( pos - 1 ) ) ) |
| 114 | && ( line.length() == pos + delimiter.length() | |
| 115 | || !isAlpha( line.charAt( pos + delimiter.length() ) ) ) ) | |
| 116 | { | |
| 117 | 0 | return pos + delimiter.length(); |
| 118 | } | |
| 119 | } | |
| 120 | else | |
| 121 | { | |
| 122 | 0 | return pos + delimiter.length(); |
| 123 | } | |
| 124 | } | |
| 125 | ||
| 126 | 0 | pos++; |
| 127 | ||
| 128 | 0 | } while ( line.length() >= pos ); |
| 129 | ||
| 130 | 0 | return NO_END; |
| 131 | } | |
| 132 | ||
| 133 | /** | |
| 134 | * @param c the char to check | |
| 135 | * @return <code>true</code> if the given character is either a lower or an upperchase alphanumerical character | |
| 136 | */ | |
| 137 | private static boolean isAlpha( char c ) | |
| 138 | { | |
| 139 | 0 | return Character.isUpperCase( c ) || Character.isLowerCase( c ); |
| 140 | } | |
| 141 | ||
| 142 | } |