fix BigInteger bug

src/main/java/me/bearns/fias/domain/Addrobj.java

@@ -3,6 +3,7 @@ package me.bearns.fias.domain;
 
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
+import me.bearns.fias.xml.DecimalAdapter;
 
 import javax.persistence.*;
 import javax.xml.bind.annotation.*;
@@ -144,6 +145,8 @@ public class Addrobj implements Serializable {
     @XmlAttribute(name = "OPERSTATUS", required = true)
     protected BigInteger operstatus;
 
+    //FIAS bug, attribute is empty
+    @XmlJavaTypeAdapter(DecimalAdapter.class)
     @XmlAttribute(name = "CURRSTATUS", required = true)
     protected BigInteger currstatus;
 

src/main/java/me/bearns/fias/xml/DecimalAdapter.java

@@ -0,0 +1,46 @@
+package me.bearns.fias.xml;
+
+import lombok.extern.slf4j.Slf4j;
+
+import javax.xml.bind.ValidationEventHandler;
+import javax.xml.bind.annotation.adapters.XmlAdapter;
+import java.math.BigInteger;
+
+@Slf4j
+public class DecimalAdapter extends XmlAdapter<String, BigInteger> {
+
+    /**
+     * Convert a value type to a bound type.
+     *
+     * @param v The value to be converted. Can be null.
+     * @throws Exception if there's an error during the conversion. The caller is responsible for
+     *                   reporting the error to the user through {@link ValidationEventHandler}.
+     */
+    @Override
+    public BigInteger unmarshal(String v) throws Exception {
+        if (v == null) return null;
+        if (v.isEmpty()) {
+            log.trace("BigInteger bug bypassed");
+            return null;
+        }
+
+        if (!v.matches("^\\d+$")) return null;
+
+        return new BigInteger(v);
+    }
+
+    /**
+     * Convert a bound type to a value type.
+     *
+     * @param v The value to be convereted. Can be null.
+     * @throws Exception if there's an error during the conversion. The caller is responsible for
+     *                   reporting the error to the user through {@link ValidationEventHandler}.
+     */
+    @Override
+    public String marshal(BigInteger v) throws Exception {
+        //TODO BigInteger marshaling impl
+        //throw new Exception("Marshalling not implemented");
+
+        return v == null ? null : v.toString();
+    }
+}