org.jboss.as.clustering.dmr.ModelNodes Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of wildfly-clustering-common Show documentation
The code in this module is not explicitly related to clustering, but rather contains resuable code used by clustering modules and any modules that integrate with clustering.
There is a newer version: 34.0.0.Final
Show newest version
/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.as.clustering.dmr;

import java.util.List;
import java.util.Optional;
import java.util.OptionalDouble;
import java.util.OptionalInt;
import java.util.OptionalLong;

import org.jboss.dmr.ModelNode;
import org.jboss.dmr.Property;

/**
 * Utility methods for extracting values from a {@link ModelNode}.
 * @author Paul Ferraro
 */
public class ModelNodes {

    /**
     * Returns the value of the node as a float.
     * @param value a model node
     * @return the value of the node as a float.
     */
    public static float asFloat(ModelNode value) {
        return Double.valueOf(value.asDouble()).floatValue();
    }

    /**
     * Returns the value of the node as an Enum value.
     * @param value a model node
     * @return the value of the node as an Enum.
     */
    public static > E asEnum(ModelNode value, Class targetClass) {
        return Enum.valueOf(targetClass, value.asString());
    }

    /**
     * Returns the optional boolean value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static Optional optionalBoolean(ModelNode value) {
        return value.isDefined() ? Optional.of(value.asBoolean()) : Optional.empty();
    }

    /**
     * Returns the optional double value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static OptionalDouble optionalDouble(ModelNode value) {
        return value.isDefined() ? OptionalDouble.of(value.asDouble()) : OptionalDouble.empty();
    }

    /**
     * Returns the optional float value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static Optional optionalFloat(ModelNode value) {
        return value.isDefined() ? Optional.of(asFloat(value)) : Optional.empty();
    }

    /**
     * Returns the optional int value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static OptionalInt optionalInt(ModelNode value) {
        return value.isDefined() ? OptionalInt.of(value.asInt()) : OptionalInt.empty();
    }

    /**
     * Returns the optional long value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static OptionalLong optionalLong(ModelNode value) {
        return value.isDefined() ? OptionalLong.of(value.asInt()) : OptionalLong.empty();
    }

    /**
     * Returns the optional string value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static Optional optionalString(ModelNode value) {
        return value.isDefined() ? Optional.of(value.asString()) : Optional.empty();
    }

    /**
     * Returns the optional property value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static Optional optionalProperty(ModelNode value) {
        return value.isDefined() ? Optional.of(value.asProperty()) : Optional.empty();
    }

    /**
     * Returns the optional property list value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static Optional> optionalPropertyList(ModelNode value) {
        return value.isDefined() ? Optional.of(value.asPropertyList()) : Optional.empty();
    }

    /**
     * Returns the optional list value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static Optional> optionalList(ModelNode value) {
        return value.isDefined() ? Optional.of(value.asList()) : Optional.empty();
    }

    /**
     * Returns the optional enum value of the specified {@link ModelNode}.
     * @param value the model node
     * @return an optional value
     */
    public static > Optional optionalEnum(ModelNode value, Class targetClass) {
        return value.isDefined() ? Optional.of(asEnum(value, targetClass)) : Optional.empty();
    }

    private ModelNodes() {
        // Hide
    }
}