IsNull.java

biz/hammurapi/sql/syntax/IsNull.java

Violations

Inspector	Message	Severity	Location
Java Inspector 048	Copyrights information should be present in each file.	1
Java Inspector 086	Use equals() instead of == or != to compare objects.	1	35:32
Java Inspector 082	Parenthesis are redundant.	2	26:36
Java Inspector 089	Undocumented top level type	2	6:1
Java Inspector 089	Undocumented constructor	2	10:9
Java Inspector 089	Undocumented method	2	14:9
Java Inspector 089	Undocumented method	2	18:9
Java Inspector 089	Undocumented method	2	22:9
Java Inspector 089	Undocumented method	2	30:9
Java Inspector 003	do, while, if, and for statements need a brace enclosed block	3	32:25
Java Inspector 003	do, while, if, and for statements need a brace enclosed block	3	34:25
Java Inspector 003	do, while, if, and for statements need a brace enclosed block	3	36:25
Java Inspector 003	do, while, if, and for statements need a brace enclosed block	3	40:33
Java Inspector 003	do, while, if, and for statements need a brace enclosed block	3	42:25
Java Inspector 025	Avoid hardwired numeric literals. Allowed literals: [1, -1, 0]	3	23:35
Java Inspector 026	Avoid hardwired string literals. Allowed literals: []	3	15:35
Java Inspector 051	It is good practice to call in any case super() in a constructor.	3	10:9

Source code

1package biz.hammurapi.sql.syntax;
2
3import java.sql.PreparedStatement;
4import java.sql.SQLException;
5
6public class IsNull implements StatementFragment {
7	
8	private String columnName;
9
10	public IsNull(String columnName) {
11		this.columnName = columnName;
12	}
13
14	public String toSqlString() {
15		return columnName+" IS NULL";
16	}
17
18	public int parameterize(PreparedStatement ps, int idx) throws SQLException {
19		return idx;
20	}
21
22	public int hashCode() {
23		final int prime = 31;
24		int result = 1;
25		result = prime * result
26				+ ((columnName == null) ? 0 : columnName.hashCode());
27		return result;
28	}
29
30	public boolean equals(Object obj) {
31		if (this == obj)
32			return true;
33		if (obj == null)
34			return false;
35		if (getClass() != obj.getClass())
36			return false;
37		final IsNull other = (IsNull) obj;
38		if (columnName == null) {
39			if (other.columnName != null)
40				return false;
41		} else if (!columnName.equals(other.columnName))
42			return false;
43		return true;
44	}
45
46}
47