cdramey/jdbcjson
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Increased version number. Added support for sql array type.

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This commit is contained in:
Christopher Ramey 2012-08-23 21:45:18 +00:00 committed by cdramey
parent 238307faec
commit 5b94df01a4
2 changed files with 140 additions and 117 deletions
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2
build.xml
View File

@ -1,6 +1,6 @@
<?xml version="1.0"?> <?xml version="1.0"?>
<project name="jdbcjson" default="compile"> <project name="jdbcjson" default="compile">
<property name="version.num" value="1.0" /> <property name="version.num" value="1.1" />
<target name="clean"> <target name="clean">
<delete file="${ant.project.name}-${version.num}.jar" /> <delete file="${ant.project.name}-${version.num}.jar" />

251
src/com/binarythought/jdbcjson/JDBCJSON.java
View File

@ -18,12 +18,20 @@ import com.google.gson.stream.JsonWriter;
public class JDBCJSON public class JDBCJSON
{ {
private static final DateFormat dateformat = DateFormat.getDateInstance(DateFormat.SHORT);
private static final DateFormat timeformat = DateFormat.getTimeInstance(DateFormat.SHORT);
private static final DateFormat datetimeformat = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT);
private boolean debug;
private Properties properties; private Properties properties;
private Set<String> warnings;
public JDBCJSON() public JDBCJSON(boolean debug)
{ {
properties = new Properties(); this.properties = new Properties();
this.debug = debug;
this.warnings = new HashSet<String>();
} }
@ -47,14 +55,14 @@ public class JDBCJSON
} }
public void run(String job, Set<String> warnings) throws Exception public Set<String> getWarnings()
{ {
DateFormat dateformat = DateFormat.getDateInstance(DateFormat.SHORT); return warnings;
DateFormat timeformat = DateFormat.getTimeInstance(DateFormat.SHORT); }
DateFormat datetimeformat = DateFormat.getDateTimeInstance(
DateFormat.SHORT, DateFormat.SHORT
);
public void run(String job) throws Exception
{
String url = properties.getProperty(job + ".url"); String url = properties.getProperty(job + ".url");
String sql = properties.getProperty(job + ".sql"); String sql = properties.getProperty(job + ".sql");
@ -77,101 +85,9 @@ public class JDBCJSON
); );
ResultSet rs = st.executeQuery(sql); ResultSet rs = st.executeQuery(sql);
ResultSetMetaData rsmd = rs.getMetaData();
int columns = rsmd.getColumnCount();
writer = new JsonWriter(new FileWriter(out, false)); writer = new JsonWriter(new FileWriter(out, false));
writer.beginArray();
while(rs.next()){
writer.beginObject();
for(int i = 1; i <= columns; i++){
switch(rsmd.getColumnType(i)){
case Types.CHAR:
case Types.LONGVARCHAR:
case Types.LONGNVARCHAR:
case Types.NCHAR:
case Types.NVARCHAR:
case Types.VARCHAR:
writer.name(rsmd.getColumnName(i));
writer.value(rs.getString(i));
break;
case Types.NULL: process(rs, writer, null);
writer.name(rsmd.getColumnName(i));
writer.nullValue();
break;
case Types.BIT:
case Types.BOOLEAN:
writer.name(rsmd.getColumnName(i));
writer.value(rs.getBoolean(i));
break;
case Types.BIGINT:
case Types.INTEGER:
case Types.SMALLINT:
case Types.TINYINT:
writer.name(rsmd.getColumnName(i));
writer.value(rs.getLong(i));
break;
case Types.REAL:
writer.name(rsmd.getColumnName(i));
writer.value(rs.getFloat(i));
break;
case Types.DOUBLE:
case Types.FLOAT:
writer.name(rsmd.getColumnName(i));
writer.value(rs.getDouble(i));
break;
case Types.DECIMAL:
case Types.NUMERIC:
writer.name(rsmd.getColumnName(i));
writer.value(rs.getBigDecimal(i));
break;
case Types.DATE:
writer.name(rsmd.getColumnName(i));
if(rs.getDate(i) == null){
writer.nullValue();
} else {
writer.value(dateformat.format(rs.getDate(i)));
}
break;
case Types.TIME:
writer.name(rsmd.getColumnName(i));
if(rs.getTime(i) == null){
writer.nullValue();
} else {
writer.value(timeformat.format(rs.getTime(i)));
}
break;
case Types.TIMESTAMP:
writer.name(rsmd.getColumnName(i));
if(rs.getTimestamp(i) == null){
writer.nullValue();
} else {
writer.value(datetimeformat.format(rs.getTimestamp(i)));
}
break;
default:
if(warnings != null){
warnings.add(
"Unsupported column, " + rsmd.getColumnName(i) +
", type " + rsmd.getColumnTypeName(i)
);
}
break;
}
}
writer.endObject();
}
writer.endArray();
} finally { } finally {
try { writer.close(); } try { writer.close(); }
@ -183,6 +99,119 @@ public class JDBCJSON
} }
private void process(ResultSet rs, JsonWriter writer, String column) throws Exception
{
ResultSetMetaData rsmd = rs.getMetaData();
int count = rsmd.getColumnCount();
writer.beginArray();
while(rs.next()){
if(column == null){ writer.beginObject(); }
for(int i = (column == null ? 1 : 2); i <= count; i++){
switch(rsmd.getColumnType(i)){
case Types.CHAR:
case Types.LONGVARCHAR:
case Types.LONGNVARCHAR:
case Types.NCHAR:
case Types.NVARCHAR:
case Types.VARCHAR:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
writer.value(rs.getString(i));
break;
case Types.NULL:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
writer.nullValue();
break;
case Types.BIT:
case Types.BOOLEAN:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
writer.value(rs.getBoolean(i));
break;
case Types.BIGINT:
case Types.INTEGER:
case Types.SMALLINT:
case Types.TINYINT:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
writer.value(rs.getLong(i));
break;
case Types.REAL:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
writer.value(rs.getFloat(i));
break;
case Types.DOUBLE:
case Types.FLOAT:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
writer.value(rs.getDouble(i));
break;
case Types.DECIMAL:
case Types.NUMERIC:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
writer.value(rs.getBigDecimal(i));
break;
case Types.DATE:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
if(rs.getDate(i) == null){
writer.nullValue();
} else {
writer.value(dateformat.format(rs.getDate(i)));
}
break;
case Types.TIME:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
if(rs.getTime(i) == null){
writer.nullValue();
} else {
writer.value(timeformat.format(rs.getTime(i)));
}
break;
case Types.TIMESTAMP:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
if(rs.getTimestamp(i) == null){
writer.nullValue();
} else {
writer.value(datetimeformat.format(rs.getTimestamp(i)));
}
break;
case Types.ARRAY:
if(column == null){ writer.name(rsmd.getColumnName(i)); }
if(rs.getArray(i) == null){
writer.nullValue();
} else {
process(
rs.getArray(i).getResultSet(),
writer,
(column == null ? rsmd.getColumnName(i) : column)
);
}
break;
default:
if(debug){
warnings.add(
"Unsupported column, " +
(column == null ? rsmd.getColumnName(i) : column) +
", type " + rsmd.getColumnTypeName(i)
);
}
break;
}
}
if(column == null){ writer.endObject(); }
}
writer.endArray();
}
public static void main(String[] args) public static void main(String[] args)
{ {
boolean debug = false; boolean debug = false;
@ -207,7 +236,7 @@ public class JDBCJSON
System.exit(1); System.exit(1);
} }
JDBCJSON jdbcjson = new JDBCJSON(); JDBCJSON jdbcjson = new JDBCJSON(debug);
try { try {
jdbcjson.load(properties_path); jdbcjson.load(properties_path);
@ -220,23 +249,17 @@ public class JDBCJSON
String[] jobs = jdbcjson.list(); String[] jobs = jdbcjson.list();
for(String job : jobs){ for(String job : jobs){
try { try { jdbcjson.run(job); }
if(debug){ catch(Exception ex){
HashSet<String> warnings = new HashSet<String>();
jdbcjson.run(job, warnings);
for(String warning : warnings){
System.out.println("Warning: " + warning);
}
} else {
jdbcjson.run(job, null);
}
} catch(Exception ex){
System.out.print("Error while running job " + job + ": "); System.out.print("Error while running job " + job + ": ");
System.out.println(ex.getMessage()); System.out.println(ex.getMessage());
if(debug){ ex.printStackTrace(); } if(debug){ ex.printStackTrace(); }
System.exit(1); System.exit(1);
} }
for(String warning : jdbcjson.getWarnings()){
System.out.println("Warning in " + job + ": " + warning);
}
} }
System.exit(0); System.exit(0);