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1
5 package org.h2.index;
6
7
10 public class IndexType {
11 private boolean isPrimaryKey, isPersistent, isUnique, isHash, isScan;
12 private boolean belongsToConstraint;
13
14 public static IndexType createPrimaryKey(boolean persistent, boolean hash) {
15 IndexType type = new IndexType();
16 type.isPrimaryKey = true;
17 type.isPersistent = persistent;
18 type.isHash = hash;
19 type.isUnique = true;
20 return type;
21 }
22
23 public static IndexType createUnique(boolean persistent, boolean hash) {
24 IndexType type = new IndexType();
25 type.isUnique = true;
26 type.isPersistent = persistent;
27 type.isHash = hash;
28 return type;
29 }
30
31 public static IndexType createNonUnique(boolean persistent) {
32 IndexType type = new IndexType();
33 type.isPersistent = persistent;
34 return type;
35 }
36
37 public static IndexType createScan(boolean persistent) {
38 IndexType type = new IndexType();
39 type.isPersistent = persistent;
40 type.isScan = true;
41 return type;
42 }
43
44 public void setBelongsToConstraint(boolean belongsToConstraint) {
45 this.belongsToConstraint = belongsToConstraint;
46 }
47
48 public boolean belongsToConstraint() {
49 return belongsToConstraint;
50 }
51
52 public boolean isHash() {
53 return isHash;
54 }
55 public boolean isPersistent() {
56 return isPersistent;
57 }
58 public boolean isPrimaryKey() {
59 return isPrimaryKey;
60 }
61 public boolean isUnique() {
62 return isUnique;
63 }
64
65 public String  getSQL() {
66 StringBuffer buff = new StringBuffer ();
67 if (isPrimaryKey) {
68 buff.append("PRIMARY KEY");
69 if(isHash) {
70 buff.append(" HASH");
71 }
72 } else {
73 if (isUnique) {
74 buff.append("UNIQUE ");
75 }
76 if (isHash) {
77 buff.append("HASH ");
78 }
79 buff.append("INDEX");
80 }
81 return buff.toString();
82 }
83
84 public boolean isScan() {
85 return isScan;
86 }
87
88 }
89 |
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