Add Short and BigDecimal type mappings to SqlTypeUtils

Short and java.math.BigDecimal had no entry in the JDBC type map, so columns of those Java types were created as VARCHAR(255) by the JDBC table sink in overwrite mode. Map Short (and short) to SMALLINT and BigDecimal to NUMERIC; the PostgreSQL dialect map inherits both from the default map.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: gepa

wayang-commons/wayang-basic/src/main/java/org/apache/wayang/basic/util/SqlTypeUtils.java

@@ -19,6 +19,7 @@
 package org.apache.wayang.basic.util;
 
 import org.apache.wayang.basic.data.Record;
+import java.math.BigDecimal;
 import java.sql.Date;
 import java.sql.Timestamp;
 import java.time.LocalDate;
@@ -42,10 +43,13 @@ public class SqlTypeUtils {
         defaultMap.put(int.class, "INT");
         defaultMap.put(Long.class, "BIGINT");
         defaultMap.put(long.class, "BIGINT");
+        defaultMap.put(Short.class, "SMALLINT");
+        defaultMap.put(short.class, "SMALLINT");
         defaultMap.put(Double.class, "DOUBLE");
         defaultMap.put(double.class, "DOUBLE");
         defaultMap.put(Float.class, "FLOAT");
         defaultMap.put(float.class, "FLOAT");
+        defaultMap.put(BigDecimal.class, "NUMERIC");
         defaultMap.put(Boolean.class, "BOOLEAN");
         defaultMap.put(boolean.class, "BOOLEAN");
         defaultMap.put(String.class, "VARCHAR(255)");