Example usage for com.fasterxml.jackson.databind JsonNode hashCode

Introduction

In this page you can find the example usage for com.fasterxml.jackson.databind JsonNode hashCode.

Prototype

@HotSpotIntrinsicCandidate
public native int hashCode();

Source Link

Document

Returns a hash code value for the object.

Usage

From source file:org.jboss.aerogear.sync.jsonmergepatch.JsonMergePatchDiff.java

public static JsonMergePatchDiff fromJsonNode(final JsonNode jsonNode) {
    try {//from w  ww  .j a  v a  2 s  .  c  om
        return new JsonMergePatchDiff(JsonMergePatch.fromJson(jsonNode), jsonNode.hashCode());
    } catch (final JsonPatchException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}

---

From source file:org.eel.kitchen.jsonschema.ref.SchemaNode.java

public SchemaNode(final SchemaContainer container, final JsonNode node) {
    this.container = container;
    this.node = node;
    hashCode = 31 * container.hashCode() + node.hashCode();
}

---

From source file:com.github.fge.jackson.JsonNumEquals.java

@Override
protected int doHash(final JsonNode t) {
    /*//ww w .  java 2 s.c  o m
     * If this is a numeric node, we want the same hashcode for the same
     * mathematical values. Go with double, its range is good enough for
     * 99+% of use cases.
     */
    if (t.isNumber())
        return Double.valueOf(t.doubleValue()).hashCode();

    /*
     * If this is a primitive type (other than numbers, handled above),
     * delegate to JsonNode.
     */
    if (!t.isContainerNode())
        return t.hashCode();

    /*
     * The following hash calculations work, yes, but they are poor at best.
     * And probably slow, too.
     *
     * TODO: try and figure out those hash classes from Guava
     */
    int ret = 0;

    /*
     * If the container is empty, just return
     */
    if (t.size() == 0)
        return ret;

    /*
     * Array
     */
    if (t.isArray()) {
        for (final JsonNode element : t)
            ret = 31 * ret + doHash(element);
        return ret;
    }

    /*
     * Not an array? An object.
     */
    final Iterator<Map.Entry<String, JsonNode>> iterator = t.fields();

    Map.Entry<String, JsonNode> entry;

    while (iterator.hasNext()) {
        entry = iterator.next();
        ret = 31 * ret + (entry.getKey().hashCode() ^ doHash(entry.getValue()));
    }

    return ret;
}

---