Examples of org.ff4j.core.Feature

org.ff4j.core.Feature
Represents a feature flag identified by an unique identifier.
Features Flags or Features Toggle have been introduced by Martin Fowler for continuous delivery perspective. It consists of enable/disable some functionalities at runtime.
SecurityManagement : Even a feature is enabled, you can limit its usage to a group of users (for instance BETA Tester) before wide over all your users.
@author Cedrick LUNVEN

    @Override
    public void update(Feature fp) {
        if (fp == null) {
            throw new IllegalArgumentException("Feature cannot be null nor empty");
        }
        Feature fpExist = read(fp.getUid());
        String enable = "0";
        if (fp.isEnable()) {
            enable = "1";
        }
        String fStrategy = null;
        String fExpression = null;
        if (fp.getFlippingStrategy() != null) {
            fStrategy = fp.getFlippingStrategy().getClass().getCanonicalName();
            fExpression = ParameterUtils.fromMap(fp.getFlippingStrategy().getInitParams());
        }
        update(SQL_UPDATE, enable, fp.getDescription(), fStrategy, fExpression, fp.getGroup(), fp.getUid());


        // To be deleted : not in second but in first
        Set<String> toBeDeleted = new HashSet<String>();
        toBeDeleted.addAll(fpExist.getPermissions());
        toBeDeleted.removeAll(fp.getPermissions());
        for (String roleToBeDelete : toBeDeleted) {
            removeRoleFromFeature(fpExist.getUid(), roleToBeDelete);
        }


        // To be created : in second but not in first
        Set<String> toBeAdded = new HashSet<String>();
        toBeAdded.addAll(fp.getPermissions());
        toBeAdded.removeAll(fpExist.getPermissions());
        for (String addee : toBeAdded) {
            grantRoleOnFeature(fpExist.getUid(), addee);
        }
    }

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        try {
            // Returns features
            ps = buildStatement(SQLQUERY_GET_FEATURE_GROUP, groupName);
            rs = ps.executeQuery();
            while (rs.next()) {
                Feature f = mapRow2Feature(rs);
                mapFP.put(f.getUid(), f);
            }


            // Returns Roles
            rs = ps.getConnection().prepareStatement(SQL_GET_ALLROLES).executeQuery();
            while (rs.next()) {

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            throw new FeatureNotFoundException(uid);
        }
        if (!existGroup(groupName)) {
            throw new GroupNotFoundException(groupName);
        }
        Feature feat = read(uid);
        if (feat.getGroup() != null && !feat.getGroup().equals(groupName)) {
            throw new IllegalArgumentException("'" + uid + "' is not in group '" + groupName + "'");
        }
        update(SQL_ADD_TO_GROUP, "", uid);
    }

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    @Override
    public void update(Feature fp) {
        if (fp == null) {
            throw new IllegalArgumentException("Feature cannot be null nor empty");
        }
        Feature fpExist = read(fp.getUid());
        // Checking new roles
        Set<String> toBeAdded = new HashSet<String>();
        toBeAdded.addAll(fp.getPermissions());
        toBeAdded.removeAll(fpExist.getPermissions());
        for (String addee : toBeAdded) {
            // Will fail if invalid userrole
            grantRoleOnFeature(fpExist.getUid(), addee);
        }
        updateFeature(fp);
    }

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            throw new IllegalArgumentException("Groupname cannot be null nor empty");
        }
        if (!exist(uid)) {
            throw new FeatureNotFoundException(uid);
        }
        Feature feat = read(uid);
        feat.setGroup(groupName);
        update(feat);
    }

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            throw new FeatureNotFoundException(uid);
        }
        if (!existGroup(groupName)) {
            throw new GroupNotFoundException(groupName);
        }
        Feature feat = read(uid);
        // --> Should not raise exception
        // if (feat.getGroup() != null && !feat.getGroup().equals(groupName)) {
        // throw new IllegalArgumentException("'" + uid + "' is not in group '" + groupName + "'");
        // }
        // <---
        feat.setGroup("");
        update(feat);
    }

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