Merge pull request #843 from quickfix-j/replace-integer-tostring

Replaced `Integer.toString()` by `NumbersCache.get()` where applicable

Author: chrjohn

quickfixj-base/src/main/java/quickfix/FieldMap.java

@@ -643,7 +643,7 @@ protected void setGroupCount(int countTag, int groupSize) {
             } else {
                 count = getField(countTag);
             }
-            count.setValue(Integer.toString(groupSize));
+            count.setValue(NumbersCache.get(groupSize));
         } catch (final FieldNotFound e) {
             // Shouldn't happen
             throw new RuntimeError(e);

quickfixj-base/src/main/java/quickfix/Message.java

@@ -410,7 +410,7 @@ private void toXMLFields(Element message, String section, FieldMap fieldMap,
                     fieldElement.setAttribute("enum", enumValue);
                 }
             }
-            fieldElement.setAttribute("tag", Integer.toString(field.getTag()));
+            fieldElement.setAttribute("tag", NumbersCache.get(field.getTag()));
             final CDATASection value = document.createCDATASection(field.getObject().toString());
             fieldElement.appendChild(value);
             fields.appendChild(fieldElement);
@@ -424,7 +424,7 @@ private void toXMLFields(Element message, String section, FieldMap fieldMap,
                     groupsElement.setAttribute("name", name);
                 }
             }
-            groupsElement.setAttribute("tag", Integer.toString(groupKey));
+            groupsElement.setAttribute("tag", NumbersCache.get(groupKey));
             final List<Group> groups = fieldMap.getGroups(groupKey);
             for (Group group : groups) {
                 toXMLFields(groupsElement, "group", group, dataDictionary);

quickfixj-base/src/main/java/quickfix/MessageUtils.java

@@ -173,7 +173,7 @@ static Message getMinimalMessage(String messageString) {
 
     public static String getStringField(String messageString, int tag) {
         String value = null;
-        final String tagString = Integer.toString(tag);
+        final String tagString = NumbersCache.get(tag);
         int start = messageString.indexOf(tagString, 0);
         while (start != -1 && value == null) {
             if ((start == 0 || messageString.charAt(start - 1) == FIELD_SEPARATOR)) {