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Java > Open Source Codes > com > jcorporate > expresso > core > db > MySQLEscapeHandler


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64
65 package com.jcorporate.expresso.core.db;
66
67 import com.jcorporate.expresso.core.security.filters.Filter;
68
69 /**
70  * This class provides escape handling mechanism for MySQL
71  *
72  * @author Larry Hamel, CodeGuild.com
73  * @since Expresso 5.0.3
74  */
75
76 public class MySQLEscapeHandler implements EscapeHandler {
77     transient private static Filter fieldFilter = null;
78
79     public MySQLEscapeHandler() {
80         init();
81     }
82
83     synchronized private void init() {
84         if (fieldFilter == null) {
85
86             // the { should not have to be replaced; it is a workaround
87 // for a known bug in Filter, that multiple \ or ' are NOT
88 // handled properly; an input string like {\\} was causing exceptions
89 fieldFilter = new Filter(new String JavaDoc[]{"'", "\\", "{"},
90                     new String JavaDoc[]{"''", "\\\\", "\\{"});
91         }
92     }
93
94     public String JavaDoc escapeString(String JavaDoc input) {
95         return fieldFilter.standardFilter(input);
96     }
97 }
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