[Monetdb-developers] compiler warnings

29 May 2006

      With the latest compiler on Fedora Core 5 I get these warnings when
compiling mapi.java (see attached file warnings1.txt).

And when compiling the jdbc tests I get the warnings in warnings2.txt.

Finally, when compiling the jdbc examples I get the warnings in
warnings3.txt.

Should something be done about these?

-- 
Sjoerd Mullender

/usr/bin/ant -f /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/build.xml -Dbuilddir=/home/sjoerd/src/devel/MonetDB/Linux/src/mapi/clients/java -Djardir=/home/sjoerd/src/devel/MonetDB/Linux/src/mapi/clients/java jar_mapi
Buildfile: /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/build.xml

prepare:

compile_mapi:
     [echo] Compiling Java Mapi
    [javac] Compiling 3 source files to /home/sjoerd/src/devel/MonetDB/Linux/src/mapi/clients/java
    [javac] ----------
    [javac] 1. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 145)
    [javac] 	private int languageId= LANG_MAL;
    [javac] 	            ^^^^^^^^^^
    [javac] The field Mapi.languageId is never read locally
    [javac] ----------
    [javac] ----------
    [javac] 2. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 148)
    [javac] 	private boolean everything = false;
    [javac] 	                ^^^^^^^^^^
    [javac] The field Mapi.everything is never read locally
    [javac] ----------
    [javac] ----------
    [javac] 3. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 152)
    [javac] 	private boolean eos = false;
    [javac] 	                ^^^
    [javac] The field Mapi.eos is never read locally
    [javac] ----------
    [javac] ----------
    [javac] 4. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 169)
    [javac] 	private int minfields= 0;
    [javac] 	            ^^^^^^^^^
    [javac] The field Mapi.minfields is never read locally
    [javac] ----------
    [javac] ----------
    [javac] 5. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 188)
    [javac] 	private String hostname( String monetport ){
    [javac] 	               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    [javac] The method hostname(String) from the type Mapi is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 6. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 194)
    [javac] 	private int portnr( String monetport ){
    [javac] 	            ^^^^^^^^^^^^^^^^^^^^^^^^^^
    [javac] The method portnr(String) from the type Mapi is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 7. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 588)
    [javac] 	private void storeBind(){
    [javac] 	             ^^^^^^^^^^^
    [javac] The method storeBind() from the type Mapi is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 8. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1007)
    [javac] 	String left,right;
    [javac] 	       ^^^^
    [javac] The local variable left is never read
    [javac] ----------
    [javac] ----------
    [javac] 9. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1007)
    [javac] 	String left,right;
    [javac] 	            ^^^^^
    [javac] The local variable right is never read
    [javac] ----------
    [javac] ----------
    [javac] 10. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1306)
    [javac] 	int i, sr=rownr;
    [javac] 	       ^^
    [javac] The local variable sr is never read
    [javac] ----------
    [javac] ----------
    [javac] 11. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1413)
    [javac] 	int n=0;
    [javac] 	    ^
    [javac] The local variable n is never read
    [javac] ----------
    [javac] ----------
    [javac] 12. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1414)
    [javac] 	int len= 0;
    [javac] 	    ^^^
    [javac] The local variable len is never read
    [javac] ----------
    [javac] ----------
    [javac] 13. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1415)
    [javac] 	String s="";
    [javac] 	       ^
    [javac] The local variable s is never read
    [javac] ----------
    [javac] ----------
    [javac] 14. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1486)
    [javac] 	private void keepProp(String name, String colname){
    [javac] 	             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    [javac] The method keepProp(String, String) from the type Mapi is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 15. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1509)
    [javac] 	String s= columns[i].columnname= fetchField(i);
    [javac] 	       ^
    [javac] The local variable s is never read
    [javac] ----------
    [javac] ----------
    [javac] 16. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1591)
    [javac] 	private int unquoteInternal(char msg[], int first)
    [javac] 	            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    [javac] The method unquoteInternal(char[], int) from the type Mapi is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 17. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1690)
    [javac] 	int size= msg.length();
    [javac] 	    ^^^^
    [javac] The local variable size is never read
    [javac] ----------
    [javac] ----------
    [javac] 18. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1749)
    [javac] 	private void dumpLine(int i){
    [javac] 	             ^^^^^^^^^^^^^^^
    [javac] The method dumpLine(int) from the type Mapi.RowCache is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 19. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/Mapi.java
    [javac]  (at line 1754)
    [javac] 	private void dumpCacheStatus(){
    [javac] 	             ^^^^^^^^^^^^^^^^^
    [javac] The method dumpCacheStatus() from the type Mapi.RowCache is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 20. WARNING in /home/sjoerd/src/devel/MonetDB/src/mapi/clients/java/mapi/MapiException.java
    [javac]  (at line 28)
    [javac] 	class MapiException extends Exception {
    [javac] 	      ^^^^^^^^^^^^^
    [javac] The serializable class MapiException does not declare a static final serialVersionUID field of type long
    [javac] ----------
    [javac] 20 problems (20 warnings)

jar_mapi:
      [jar] Building jar: /home/sjoerd/src/devel/MonetDB/Linux/src/mapi/clients/java/mapi.jar

BUILD SUCCESSFUL
Total time: 7 seconds

/usr/bin/ant -f /home/sjoerd/src/devel/sql/src/jdbc/tests/build.xml -Dbuilddir=/home/sjoerd/src/devel/sql/Linux/src/jdbc/tests -Djardir=/home/sjoerd/src/devel/sql/Linux/src/jdbc/tests compile
Buildfile: /home/sjoerd/src/devel/sql/src/jdbc/tests/build.xml

prepare:

compile:
     [echo] Compiling JDBC tests
    [javac] Compiling 13 source files to /home/sjoerd/src/devel/sql/Linux/src/jdbc/tests
    [javac] ----------
    [javac] 1. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/tests/Test_Csavepoints.java
    [javac]  (at line 50)
    [javac] 	Savepoint sp1 = con.setSavepoint();
    [javac] 	          ^^^
    [javac] The local variable sp1 is never read
    [javac] ----------
    [javac] ----------
    [javac] 2. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/tests/Test_PStypes.java
    [javac]  (at line 27)
    [javac] 	ResultSet rs = null;
    [javac] 	          ^^
    [javac] The local variable rs is never read
    [javac] ----------
    [javac] 2 problems (2 warnings)

BUILD SUCCESSFUL
Total time: 7 seconds

/usr/bin/ant -f /home/sjoerd/src/devel/sql/src/jdbc/build.xml -Dbuilddir=/home/sjoerd/src/devel/sql/Linux/src/jdbc -Djardir=/home/sjoerd/src/devel/sql/Linux/src/jdbc jar_jdbcclient
Buildfile: /home/sjoerd/src/devel/sql/src/jdbc/build.xml

prepare:
    [mkdir] Created dir: /home/sjoerd/src/devel/sql/Linux/src/jdbc/example
     [echo] Debug is true, optimise is true

driver:

compile_jdbc:
     [echo] Compiling JDBC driver
    [javac] Compiling 11 source files to /home/sjoerd/src/devel/sql/Linux/src/jdbc
    [javac] ----------
    [javac] 1. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 59)
    [javac] 	private final int port;
    [javac] 	                  ^^^^
    [javac] The field MonetConnection.port is never read locally
    [javac] ----------
    [javac] ----------
    [javac] 2. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 1515)
    [javac] 	private final String getValue(char[] chrLine, int start, int stop) {
    [javac] 	                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    [javac] The method getValue(char[], int, int) from the type MonetConnection.ResultSetResponse is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 3. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 2090)
    [javac] 	int lastState = linetype;
    [javac] 	    ^^^^^^^^^
    [javac] The local variable lastState is never read
    [javac] ----------
    [javac] ----------
    [javac] 4. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 2175)
    [javac] 	int columncount = parseNumber(soh);
    [javac] 	    ^^^^^^^^^^^
    [javac] The local variable columncount is never read
    [javac] ----------
    [javac] ----------
    [javac] 5. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetDatabaseMetaData.java
    [javac]  (at line 1402)
    [javac] 	private static String dq(String in) {
    [javac] 	                      ^^^^^^^^^^^^^
    [javac] The method dq(String) from the type MonetDatabaseMetaData is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 6. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetSavepoint.java
    [javac]  (at line 139)
    [javac] 	private static synchronized int getHighestId() {
    [javac] 	                                ^^^^^^^^^^^^^^
    [javac] The method getHighestId() from the type MonetSavepoint is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 7. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetSocketBlockMode.java
    [javac]  (at line 24)
    [javac] 	import java.util.*;
    [javac] 	       ^^^^^^^^^
    [javac] The import java.util is never used
    [javac] ----------
    [javac] ----------
    [javac] 8. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/util/MonetRedirectException.java
    [javac]  (at line 23)
    [javac] 	public class MonetRedirectException extends Exception {
    [javac] 	             ^^^^^^^^^^^^^^^^^^^^^^
    [javac] The serializable class MonetRedirectException does not declare a static final serialVersionUID field of type long
    [javac] ----------
    [javac] 8 problems (8 warnings)

jar_jdbc:
      [jar] Building jar: /home/sjoerd/src/devel/sql/Linux/src/jdbc/monetdb-1.4-jdbc.jar

compile_client:
     [echo] Compiling Clients
    [javac] Compiling 7 source files to /home/sjoerd/src/devel/sql/Linux/src/jdbc
    [javac] ----------
    [javac] 1. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/client/util/Exporter.java
    [javac]  (at line 23)
    [javac] 	import java.util.*;
    [javac] 	       ^^^^^^^^^
    [javac] The import java.util is never used
    [javac] ----------
    [javac] ----------
    [javac] 2. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/client/util/OptionsException.java
    [javac]  (at line 21)
    [javac] 	public class OptionsException extends Exception {
    [javac] 	             ^^^^^^^^^^^^^^^^
    [javac] The serializable class OptionsException does not declare a static final serialVersionUID field of type long
    [javac] ----------
    [javac] ----------
    [javac] 3. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/client/util/PasswordField.java
    [javac]  (at line 43)
    [javac] 	int i;
    [javac] 	    ^
    [javac] The local variable i is never read
    [javac] ----------
    [javac] ----------
    [javac] 4. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 59)
    [javac] 	private final int port;
    [javac] 	                  ^^^^
    [javac] The field MonetConnection.port is never read locally
    [javac] ----------
    [javac] ----------
    [javac] 5. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 1515)
    [javac] 	private final String getValue(char[] chrLine, int start, int stop) {
    [javac] 	                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    [javac] The method getValue(char[], int, int) from the type MonetConnection.ResultSetResponse is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 6. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 2090)
    [javac] 	int lastState = linetype;
    [javac] 	    ^^^^^^^^^
    [javac] The local variable lastState is never read
    [javac] ----------
    [javac] ----------
    [javac] 7. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetConnection.java
    [javac]  (at line 2175)
    [javac] 	int columncount = parseNumber(soh);
    [javac] 	    ^^^^^^^^^^^
    [javac] The local variable columncount is never read
    [javac] ----------
    [javac] ----------
    [javac] 8. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetSocketBlockMode.java
    [javac]  (at line 24)
    [javac] 	import java.util.*;
    [javac] 	       ^^^^^^^^^
    [javac] The import java.util is never used
    [javac] ----------
    [javac] ----------
    [javac] 9. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/util/MonetRedirectException.java
    [javac]  (at line 23)
    [javac] 	public class MonetRedirectException extends Exception {
    [javac] 	             ^^^^^^^^^^^^^^^^^^^^^^
    [javac] The serializable class MonetRedirectException does not declare a static final serialVersionUID field of type long
    [javac] ----------
    [javac] ----------
    [javac] 10. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetDatabaseMetaData.java
    [javac]  (at line 1402)
    [javac] 	private static String dq(String in) {
    [javac] 	                      ^^^^^^^^^^^^^
    [javac] The method dq(String) from the type MonetDatabaseMetaData is never used locally
    [javac] ----------
    [javac] ----------
    [javac] 11. WARNING in /home/sjoerd/src/devel/sql/src/jdbc/nl/cwi/monetdb/jdbc/MonetSavepoint.java
    [javac]  (at line 139)
    [javac] 	private static synchronized int getHighestId() {
    [javac] 	                                ^^^^^^^^^^^^^^
    [javac] The method getHighestId() from the type MonetSavepoint is never used locally
    [javac] ----------
    [javac] 11 problems (11 warnings)

jar_jdbcclient:
     [echo] Building JDBC + JdbcClient convenience jar
    [unjar] Expanding: /home/sjoerd/src/devel/sql/Linux/src/jdbc/monetdb-1.4-jdbc.jar into /home/sjoerd/src/devel/sql/Linux/src/jdbc
      [jar] Building jar: /home/sjoerd/src/devel/sql/Linux/src/jdbc/jdbcclient-1.4.jar

BUILD SUCCESSFUL
Total time: 16 seconds