com.fasterxml.jackson.module.hibernate.HibernateModule.java Source code

Introduction

Here is the source code for com.fasterxml.jackson.module.hibernate.HibernateModule.java

Source

package com.fasterxml.jackson.module.hibernate;

import org.codehaus.jackson.Version;
import org.codehaus.jackson.map.*;

public class HibernateModule extends Module {
    private final String NAME = "HibernateModule";

    // Should externalize this somehow
    private final static Version VERSION = new Version(0, 1, 0, null); // 0.1.0

    /**
     * Enumeration that defines all togglable features this module
     */
    public enum Feature {
        /**
         * Whether lazy-loaded object should be forced to be loaded and then serialized
         * (true); or serialized as nulls (false).
         */
        FORCE_LAZY_LOADING(false);

        final boolean _defaultState;
        final int _mask;

        /**
         * Method that calculates bit set (flags) of all features that
         * are enabled by default.
         */
        public static int collectDefaults() {
            int flags = 0;
            for (Feature f : values()) {
                if (f.enabledByDefault()) {
                    flags |= f.getMask();
                }
            }
            return flags;
        }

        private Feature(boolean defaultState) {
            _defaultState = defaultState;
            _mask = (1 << ordinal());
        }

        public boolean enabledByDefault() {
            return _defaultState;
        }

        public int getMask() {
            return _mask;
        }
    }

    protected final static int DEFAULT_FEATURES = Feature.collectDefaults();

    /**
     * Bit flag composed of bits that indicate which
     * {@link Feature}s
     * are enabled.
     */
    protected int _moduleFeatures = DEFAULT_FEATURES;

    /*
    /**********************************************************
    /* Life-cycle
    /**********************************************************
     */

    public HibernateModule() {
    }

    @Override
    public String getModuleName() {
        return NAME;
    }

    @Override
    public Version version() {
        return VERSION;
    }

    @Override
    public void setupModule(SetupContext context) {
        /* First, append annotation introspector (no need to override, esp.
         * as we just implement couple of methods)
         */
        context.appendAnnotationIntrospector(new HibernateAnnotationIntrospector());
        // Then add serializers we need
        context.addSerializers(new HibernateSerializers(_moduleFeatures));
    }

    /*
    /**********************************************************
    /* Extended API, configuration
    /**********************************************************
     */

    public HibernateModule enable(Feature f) {
        _moduleFeatures |= f.getMask();
        return this;
    }

    public HibernateModule disable(Feature f) {
        _moduleFeatures &= ~f.getMask();
        return this;
    }

    public final boolean isEnabled(Feature f) {
        return (_moduleFeatures & f.getMask()) != 0;
    }

    public HibernateModule configure(Feature f, boolean state) {
        if (state) {
            enable(f);
        } else {
            disable(f);
        }
        return this;
    }

}