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1
17 package org.apache.ws.jaxme.sqls.impl;
18
19 import org.apache.ws.jaxme.sqls.BinaryColumn;
20 import org.apache.ws.jaxme.sqls.Column;
21 import org.apache.ws.jaxme.sqls.StringColumn;
22 import org.apache.ws.jaxme.sqls.Table;
23
24
27 public abstract class AbstractColumn implements Column, StringColumn, BinaryColumn {
28 private final Column.Name name;
29 private final Column.Type type;
30 private boolean nullable;
31 private Long  length;
32 private Object customData;
33
34 protected AbstractColumn(Column.Name pName, Column.Type pType) {
35 if (pName == null) {
36 throw new NullPointerException ("The column name must not be null.");
37 }
38 if (pType == null) {
39 throw new NullPointerException ("The column type must not be null.");
40 }
41 name = pName;
42 type = pType;
43 }
44
45 public Column.Name getName() { return name; }
46 public Column.Type getType() { return type; }
47 public boolean isNullable() { return nullable; }
48 public void setNullable(boolean pNullable) { nullable = pNullable; }
49
50
51 public boolean equals(Object o) {
52 if (o == null || !(o instanceof Column)) {
53 return false;
54 }
55 Column other = (Column) o;
56 Table table = getTable();
57 if (table == null) {
58 if (other.getTable() != null) {
59 return false;
60 }
61 } else {
62 if (!table.equals(other.getTable())) {
63 return false;
64 }
65 }
66 return getName().equals(other.getName());
67 }
68
69 public int hashCode() {
70 return getTable().hashCode() + getName().hashCode();
71 }
72
73 public boolean hasFixedLength() {
74 Column.Type myType = getType();
75 if (Column.Type.CHAR.equals(myType) ||
76 Column.Type.BINARY.equals(myType)) {
77 return true;
78 } else if (Column.Type.VARCHAR.equals(myType)
79 || Column.Type.VARBINARY.equals(myType)
80 || Column.Type.BLOB.equals(myType)
81 || Column.Type.OTHER.equals(myType)
82 || Column.Type.CLOB.equals(myType)) {
83 return false;
84 } else {
85 throw new IllegalStateException ("Invalid data type for fixed length.");
86 }
87 }
88
89 public boolean isStringColumn() {
90 Column.Type myType = getType();
91 return Column.Type.CHAR.equals(myType) || Column.Type.VARCHAR.equals(myType) ||
92 Column.Type.CLOB.equals(myType);
93 }
94
95 public boolean isBinaryColumn() {
96 Column.Type myType = getType();
97 return Column.Type.BINARY.equals(myType) || Column.Type.VARBINARY.equals(myType) ||
98 Column.Type.BLOB.equals(myType) || Column.Type.OTHER.equals(myType);
99 }
100
101 public void setLength(Long pLength) {
102 length = pLength;
103 }
104
105 public void setLength(long pLength) {
106 setLength(new Long (pLength));
107 }
108
109 public Long getLength() {
110 return length;
111 }
112
113 public Object getCustomData() {
114 return customData;
115 }
116
117 public void setCustomData(Object pCustomData) {
118 customData = pCustomData;
119 }
120 }
121 |
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