(#28) Added setCharacterStream

driver/src/main/java/com/consol/citrus/db/driver/data/CitrusClob.java

@@ -75,7 +75,7 @@ public int setString(final long pos, final String str) {
     public int setString(final long pos, final String str, final int offset, final int len) {
         final long positionWithOffset = applyOffset(pos);
         if(fitsInInt(positionWithOffset)){
-            return setContent((int) positionWithOffset, str, offset, len);
+            return setContent(stringBuilder, (int) positionWithOffset, str, offset, len);
         }else {
             return 0;
         }
@@ -96,8 +96,26 @@ public void write(final int b) {
     }
 
     @Override
-    public Writer setCharacterStream(final long pos) throws SQLException {
-        return null;
+    public Writer setCharacterStream(final long pos) {
+        return new Writer() {
+
+            private StringBuilder buffer = new StringBuilder();
+
+            @Override
+            public void write(final char[] cbuf, final int off, final int len) {
+                setContent(buffer, off, new String(cbuf), 0, len);
+            }
+
+            @Override
+            public void flush() {
+                buffer = new StringBuilder();
+            }
+
+            @Override
+            public void close() {
+                setString(pos, buffer.toString());
+            }
+        };
     }
 
     @Override
@@ -147,13 +165,14 @@ private long applyOffset(final long pos) {
      * Alters the {@link StringBuilder} of this @{@link CitrusClob} to contain the given string.
      * If the size of the altered string exceeds the current StringBuilder size, it is automatically extended to the
      * required capacity.
+     * @param stringBuilder The string builder to alter
      * @param position The start position for altering the content. Starts at 0.
      * @param stringToSet The String to set the content from.
      * @param offset  the index of the first character of {@code stringToSet} to be inserted. Starting at 0.
      * @param length The length of the string to set.
      * @return
      */
-    private int setContent(final int position, final String stringToSet, final int offset, final int length) {
+    private int setContent(final StringBuilder stringBuilder, final int position, final String stringToSet, final int offset, final int length) {
         final boolean expandsString = position + length > stringBuilder.length();
 
         if(expandsString){

driver/src/test/java/com/consol/citrus/db/driver/data/CitrusClobTest.java

@@ -8,6 +8,7 @@
 
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.io.Writer;
 import java.nio.charset.Charset;
 import java.sql.Clob;
 import java.sql.SQLException;
@@ -244,6 +245,27 @@ public void testSetAsciiStream() throws Exception{
         assertEquals(clobContent, expectedClobContent);
     }
 
+    @Test
+    public void testSetCharacterStream() throws Exception{
+
+        //GIVEN
+        citrusClob.setString(1, sampleText);
+
+        final int position = 15;
+        final String textToAdd = "fire photon torpedoes";
+
+        final String expectedClobContent = "Keep calm and fire photon torpedoes";
+
+        //WHEN
+        final Writer writer = citrusClob.setCharacterStream(position);
+        writer.write(textToAdd);
+        writer.close();
+
+        //THEN
+        final String clobContent = IOUtils.toString(citrusClob.getCharacterStream());
+        assertEquals(clobContent, expectedClobContent);
+    }
+
     @Test
     public void testEqualsContract(){
         final StringBuilder one = new StringBuilder();