Handle empty type in NormalizedNode streaming

[controller.git] / opendaylight / md-sal / sal-clustering-commons / src / main / java / org / opendaylight / controller / cluster / datastore / node / utils / stream / ValueTypes.java

diff --git a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/ValueTypes.java b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/ValueTypes.java
index 80fa527b4613e54d942aa14cc121c3cf234dd410..51ff8d35006f5fba38c6b047038965105a6408e8 100644 (file)
--- a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/ValueTypes.java
+++ b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/ValueTypes.java
@@ -8,17 +8,21 @@
 
 package org.opendaylight.controller.cluster.datastore.node.utils.stream;
 
-import com.google.common.base.Preconditions;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableMap.Builder;
 import java.math.BigDecimal;
 import java.math.BigInteger;
-import java.util.HashMap;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
+import org.opendaylight.yangtools.yang.common.Empty;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+
+final class ValueTypes {
+    // The String length threshold beyond which a String should be encoded as bytes
+    public static final int STRING_BYTES_LENGTH_THRESHOLD = Short.MAX_VALUE / 4;
 
-public class ValueTypes {
     public static final byte SHORT_TYPE = 1;
     public static final byte BYTE_TYPE = 2;
     public static final byte INT_TYPE = 3;
@@ -30,33 +34,57 @@ public class ValueTypes {
     public static final byte STRING_TYPE = 9;
     public static final byte BIG_INTEGER_TYPE = 10;
     public static final byte BIG_DECIMAL_TYPE = 11;
+    public static final byte BINARY_TYPE = 12;
+    // Leaf nodes no longer allow null values. The "empty" type is now represented as
+    // org.opendaylight.yangtools.yang.common.Empty. This is kept for backwards compatibility.
+    @Deprecated
+    public static final byte NULL_TYPE = 13;
+    public static final byte STRING_BYTES_TYPE = 14;
+    public static final byte EMPTY_TYPE = 15;
 
-    private static Map<Class<?>, Byte> types = new HashMap<>();
+    private static final Map<Class<?>, Byte> TYPES;
 
     static {
-        types.put(String.class, Byte.valueOf(STRING_TYPE));
-        types.put(Byte.class, Byte.valueOf(BYTE_TYPE));
-        types.put(Integer.class, Byte.valueOf(INT_TYPE));
-        types.put(Long.class, Byte.valueOf(LONG_TYPE));
-        types.put(Boolean.class, Byte.valueOf(BOOL_TYPE));
-        types.put(QName.class, Byte.valueOf(QNAME_TYPE));
-        types.put(Set.class, Byte.valueOf(BITS_TYPE));
-        types.put(YangInstanceIdentifier.class, Byte.valueOf(YANG_IDENTIFIER_TYPE));
-        types.put(Short.class, Byte.valueOf(SHORT_TYPE));
-        types.put(BigInteger.class, Byte.valueOf(BIG_INTEGER_TYPE));
-        types.put(BigDecimal.class, Byte.valueOf(BIG_DECIMAL_TYPE));
+        final Builder<Class<?>, Byte> b = ImmutableMap.builder();
+
+        b.put(String.class, STRING_TYPE);
+        b.put(Byte.class, BYTE_TYPE);
+        b.put(Integer.class, INT_TYPE);
+        b.put(Long.class, LONG_TYPE);
+        b.put(Boolean.class, BOOL_TYPE);
+        b.put(QName.class, QNAME_TYPE);
+        b.put(Short.class, SHORT_TYPE);
+        b.put(BigInteger.class, BIG_INTEGER_TYPE);
+        b.put(BigDecimal.class, BIG_DECIMAL_TYPE);
+        b.put(byte[].class, BINARY_TYPE);
+        b.put(Empty.class, EMPTY_TYPE);
+
+        TYPES = b.build();
+    }
+
+    private ValueTypes() {
+        throw new UnsupportedOperationException("Utility class");
     }
 
-    public static final byte getSerializableType(Object node){
-        Preconditions.checkNotNull(node, "node should not be null");
+    public static byte getSerializableType(Object node) {
+        Objects.requireNonNull(node);
 
-        Byte type = types.get(node.getClass());
-        if(type != null) {
+        final Byte type = TYPES.get(node.getClass());
+        if (type != null) {
+            if (type == STRING_TYPE && ((String) node).length() >= STRING_BYTES_LENGTH_THRESHOLD) {
+                return STRING_BYTES_TYPE;
+            }
             return type;
-        } else if(node instanceof Set){
+        }
+
+        if (node instanceof Set) {
             return BITS_TYPE;
         }
 
+        if (node instanceof YangInstanceIdentifier) {
+            return YANG_IDENTIFIER_TYPE;
+        }
+
         throw new IllegalArgumentException("Unknown value type " + node.getClass().getSimpleName());
     }
 }