provide XML support for oracle plugin

Author: Vanshikaa Gupta

oracle-plugin/src/main/java/io/cdap/plugin/oracle/OracleSourceDBRecord.java

@@ -265,6 +265,7 @@ private void handleOracleSpecificType(ResultSet resultSet, StructuredRecord.Buil
     switch (sqlType) {
       case OracleSourceSchemaReader.INTERVAL_YM:
       case OracleSourceSchemaReader.INTERVAL_DS:
+      case OracleSourceSchemaReader.XML:
       case OracleSourceSchemaReader.LONG:
       case Types.NCLOB:
         recordBuilder.set(field.getName(), resultSet.getString(columnIndex));

oracle-plugin/src/main/java/io/cdap/plugin/oracle/OracleSourceSchemaReader.java

@@ -44,6 +44,7 @@ public class OracleSourceSchemaReader extends CommonSchemaReader {
   public static final int BINARY_DOUBLE = 101;
   public static final int BFILE = -13;
   public static final int LONG = -1;
+  public static final int XML = 2009;
   public static final int LONG_RAW = -4;
 
   /**
@@ -61,6 +62,7 @@ public class OracleSourceSchemaReader extends CommonSchemaReader {
     BINARY_DOUBLE,
     BFILE,
     LONG,
+    XML,
     LONG_RAW,
     Types.NUMERIC,
     Types.DECIMAL
@@ -102,6 +104,7 @@ public Schema getSchema(ResultSetMetaData metadata, int index) throws SQLExcepti
         return Schema.of(Schema.Type.BYTES);
       case INTERVAL_DS:
       case INTERVAL_YM:
+      case XML:
       case LONG:
         return Schema.of(Schema.Type.STRING);
       case Types.NUMERIC: