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1 package org.hibernate.mapping;
3
4 import java.io.Serializable  ;
5 import java.util.ArrayList ;
6 import java.util.Iterator ;
7 import java.util.List ;
8
9 import org.hibernate.HibernateException;
10 import org.hibernate.dialect.Dialect;
11 import org.hibernate.engine.Mapping;
12 import org.hibernate.util.StringHelper;
13
14
18 public class Index implements RelationalModel, Serializable {
19
20 private Table table;
21 private List columns = new ArrayList ();
22 private String name;
23
24 public String sqlCreateString(Dialect dialect, Mapping mapping, String defaultCatalog, String defaultSchema) throws HibernateException {
25 return buildSqlCreateIndexString(dialect, getName(), getTable(), getColumnIterator(), false, defaultCatalog, defaultSchema);
26 }
27
28 public static String buildSqlDropIndexString(Dialect dialect, Table table, String name, String defaultCatalog, String defaultSchema) {
29 return "drop index " + StringHelper.qualify( table.getQualifiedName(dialect, defaultCatalog, defaultSchema), name);
30 }
31 public static String buildSqlCreateIndexString(Dialect dialect, String name, Table table, Iterator columns, boolean unique, String defaultCatalog, String defaultSchema) {
32 StringBuffer buf = new StringBuffer ("create")
33 .append( unique ? " unique " : "")
34 .append(" index ")
35 .append( dialect.qualifyIndexName() ? name : StringHelper.unqualify(name) )
36 .append(" on ")
37 .append( table.getQualifiedName(dialect, defaultCatalog, defaultSchema) )
38 .append(" (");
39 Iterator iter = columns;
40 while ( iter.hasNext() ) {
41 buf.append( ( (Column) iter.next() ).getQuotedName(dialect) );
42 if ( iter.hasNext() ) buf.append(", ");
43 }
44 buf.append(")");
45 return buf.toString();
46 }
47
48
49 public String sqlConstraintString(Dialect dialect) {
51 StringBuffer buf = new StringBuffer (" index (");
52 Iterator iter = getColumnIterator();
53 while ( iter.hasNext() ) {
54 buf.append( ( (Column) iter.next() ).getQuotedName(dialect) );
55 if ( iter.hasNext() ) buf.append(", ");
56 }
57 return buf.append(')').toString();
58 }
59
60 public String sqlDropString(Dialect dialect, String defaultCatalog, String defaultSchema) {
61 return "drop index " + StringHelper.qualify( table.getQualifiedName(dialect, defaultCatalog, defaultSchema), name);
62 }
63
64 public Table getTable() {
65 return table;
66 }
67 public void setTable(Table table) {
68 this.table = table;
69 }
70 public int getColumnSpan() {
71 return columns.size();
72 }
73 public Iterator getColumnIterator() {
74 return columns.iterator();
75 }
76 public void addColumn(Column column) {
77 if ( !columns.contains(column) ) columns.add(column);
78 }
79 public void addColumns(Iterator extraColumns) {
80 while ( extraColumns.hasNext() ) addColumn( (Column) extraColumns.next() );
81 }
82
86 public boolean containsColumn(Column column) {
87 return columns.contains(column);
88 }
89
90 public String getName() {
91 return name;
92 }
93 public void setName(String name) {
94 this.name = name;
95 }
96
97 public String toString() {
98
99 return getClass().getName() + "(" + getName() + ")";
100 }
101 }
102 |
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