diff --git a/src/main/scala/eu/mulk/entity/OpenIdPK.java b/src/main/scala/eu/mulk/entity/OpenIdPK.java
new file mode 100644
index 0000000..776911b
--- /dev/null
+++ b/src/main/scala/eu/mulk/entity/OpenIdPK.java
@@ -0,0 +1,50 @@
+package eu.mulk.entity;
+
+import java.io.Serializable;
+import java.util.Objects;
+import javax.persistence.Column;
+import javax.persistence.Id;
+
+public class OpenIdPK implements Serializable {
+
+  private int userId;
+  private String openid;
+
+  @Column(name = "user", nullable = false)
+  @Id
+  public int getUserId() {
+    return userId;
+  }
+
+  public void setUserId(int userId) {
+    this.userId = userId;
+  }
+
+  @Column(name = "openid", nullable = false, length = -1)
+  @Id
+  public String getOpenid() {
+    return openid;
+  }
+
+  public void setOpenid(String openid) {
+    this.openid = openid;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    OpenIdPK openIdPK = (OpenIdPK) o;
+    return userId == openIdPK.userId &&
+        Objects.equals(openid, openIdPK.openid);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(userId, openid);
+  }
+}