refactor

1 files changed, 60 insertions, 0 deletions

diff --git a/src/main/java/com/keuin/kbackupfabric/backup/incremental/ObjectElement.java b/src/main/java/com/keuin/kbackupfabric/backup/incremental/ObjectElement.java
new file mode 100644
index 0000000..0bb7873
--- /dev/null
+++ b/src/main/java/com/keuin/kbackupfabric/backup/incremental/ObjectElement.java
@@ -0,0 +1,60 @@
+package com.keuin.kbackupfabric.backup.incremental;
+
+import com.keuin.kbackupfabric.backup.incremental.identifier.ObjectIdentifier;
+
+import java.io.Serializable;
+import java.util.Objects;
+
+/**
+ * Representing a file in a ObjectCollection.
+ * Immutable.
+ */
+public class ObjectElement implements Serializable {
+    private final String name;
+    private final ObjectIdentifier identifier;
+
+    public ObjectElement(String name, ObjectIdentifier identifier) {
+        Objects.requireNonNull(name);
+        Objects.requireNonNull(identifier);
+        this.name = name;
+        this.identifier = identifier;
+    }
+
+    /**
+     * Get file name.
+     * @return the file name.
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Get file identifier, which is considered to be different between files with different contents.
+     * @return the identifier.
+     */
+    public ObjectIdentifier getIdentifier() {
+        return identifier;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        ObjectElement that = (ObjectElement) o;
+        return name.equals(that.name) &&
+                identifier.equals(that.identifier);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, identifier);
+    }
+
+    @Override
+    public String toString() {
+        return "ObjectElement{" +
+                "name='" + name + '\'' +
+                ", identifier=" + identifier +
+                '}';
+    }
+}