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-rw-r--r--utils/src/main/java/org/onap/policy/common/utils/coder/Coder.java34
1 files changed, 33 insertions, 1 deletions
diff --git a/utils/src/main/java/org/onap/policy/common/utils/coder/Coder.java b/utils/src/main/java/org/onap/policy/common/utils/coder/Coder.java
index ec0e5e42..3049a5c2 100644
--- a/utils/src/main/java/org/onap/policy/common/utils/coder/Coder.java
+++ b/utils/src/main/java/org/onap/policy/common/utils/coder/Coder.java
@@ -32,6 +32,37 @@ import java.io.Writer;
public interface Coder {
/**
+ * Converts an object/POJO to an object of the given type.
+ *
+ * @param <T> desired type
+ * @param source source object
+ * @param clazz class of the desired object type
+ * @return the converted object
+ * @throws CoderException if an error occurs
+ */
+ default <S, T> T convert(S source, Class<T> clazz) throws CoderException {
+ if (source == null) {
+ return null;
+
+ } else if (clazz == source.getClass()) {
+ // same class - just cast it
+ return clazz.cast(source);
+
+ } else if (clazz == String.class) {
+ // target is a string - just encode the source
+ return (clazz.cast(encode(source)));
+
+ } else if (source.getClass() == String.class) {
+ // source is a string - just decode it
+ return decode(source.toString(), clazz);
+
+ } else {
+ // do it the long way: encode to a string and then decode the string
+ return decode(encode(source), clazz);
+ }
+ }
+
+ /**
* Encodes an object into json.
*
* @param object object to be encoded
@@ -44,7 +75,8 @@ public interface Coder {
* Encodes an object into json, optionally making it "pretty".
*
* @param object object to be encoded
- * @param pretty {@code true} if it should be encoded as "pretty" json, {@code false} otherwise
+ * @param pretty {@code true} if it should be encoded as "pretty" json, {@code false}
+ * otherwise
* @return a json string representing the object
* @throws CoderException if an error occurs
*/