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1 package org.hibernate.util;
3
4 import org.hibernate.sql.Template;
5 import org.hibernate.impl.FilterImpl;
6 import org.hibernate.dialect.Dialect;
7
8 import java.util.Map  ;
9 import java.util.Iterator ;
10
11
16 public class FilterHelper {
17
18 private final String [] filterNames;
19 private final String [] filterConditions;
20
21
29 public FilterHelper(Map filters, Dialect dialect) {
30 int filterCount = filters.size();
31 filterNames = new String [filterCount];
32 filterConditions = new String [filterCount];
33 Iterator iter = filters.entrySet().iterator();
34 filterCount = 0;
35 while ( iter.hasNext() ) {
36 final Map.Entry entry = (Map.Entry ) iter.next();
37 filterNames[filterCount] = (String ) entry.getKey();
38 filterConditions[filterCount] = Template.renderWhereStringTemplate(
39 (String ) entry.getValue(),
40 FilterImpl.MARKER,
41 dialect
42 );
43 filterConditions[filterCount] = StringHelper.replace( filterConditions[filterCount],
44 ":",
45 ":" + filterNames[filterCount] + "." );
46 filterCount++;
47 }
48 }
49
50 public boolean isAffectedBy(Map enabledFilters) {
51 for ( int i = 0, max = filterNames.length; i < max; i++ ) {
52 if ( enabledFilters.containsKey( filterNames[i] ) ) {
53 return true;
54 }
55 }
56 return false;
57 }
58
59 public String render(String alias, Map enabledFilters) {
60 StringBuffer buffer = new StringBuffer ();
61 render( buffer, alias, enabledFilters );
62 return buffer.toString();
63 }
64
65 public void render(StringBuffer buffer, String alias, Map enabledFilters) {
66 if ( filterNames != null && filterNames.length > 0 ) {
67 for ( int i = 0, max = filterNames.length; i < max; i++ ) {
68 if ( enabledFilters.containsKey( filterNames[i] ) ) {
69 final String condition = filterConditions[i];
70 if ( StringHelper.isNotEmpty( condition ) ) {
71 buffer.append( " and " )
72 .append( StringHelper.replace( condition, FilterImpl.MARKER, alias ) );
73 }
74 }
75 }
76 }
77 }
78 }
79 |
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