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


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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 character field filtering that is known to be compliant with
71  * the Firebird, MySQL and PostgreSQL databases. It replaces single backslashes
72  * with double backslashes. so that those characters are escaped. Currently
73  * &quote; 's are simply removed as I haven't found a way to get the databases
74  * to accept them nicely.
75  *
76  * @author Michael Rimov
77  */
78 public class DefaultEscapeHandler implements EscapeHandler {
79
80     transient private static Filter fieldFilter = null;
81
82     public DefaultEscapeHandler() {
83         init();
84     }
85
86     synchronized private void init() {
87         if (fieldFilter == null) {
88             fieldFilter = new Filter(new String JavaDoc[]{"\\", "\'", "\""},
89                     new String JavaDoc[]{"\\\\", "\\'", ""});
90         }
91     }
92
93     public String JavaDoc escapeString(String JavaDoc input) {
94         return fieldFilter.standardFilter(input);
95     }
96 }
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