de.kaiserpfalzEdv.iam.core.identity.SubjectDO.java Source code

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Here is the source code for de.kaiserpfalzEdv.iam.core.identity.SubjectDO.java

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/*
 * Copyright (c) 2014 Kaiserpfalz EDV-Service, Roland Lichti
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.kaiserpfalzEdv.iam.core.identity;

import com.google.common.collect.Lists;
import de.kaiserpfalzEdv.commons.NameableReadable;
import de.kaiserpfalzEdv.iam.core.base.IAMBaseObject;
import de.kaiserpfalzEdv.iam.core.role.RoleBuilder;
import de.kaiserpfalzEdv.iam.core.role.RoleDO;
import de.kaiserpfalzEdv.iam.identity.Identity;
import de.kaiserpfalzEdv.iam.identity.Subject;
import de.kaiserpfalzEdv.iam.identity.SubjectWritable;
import de.kaiserpfalzEdv.iam.role.Role;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.UUID;

import static com.google.common.base.Preconditions.checkArgument;

/**
 * @author klenkes <rlichti@kaiserpfalz-edv.de>
 * @since 2014Q3
 */
public class SubjectDO extends IAMBaseObject implements Subject, SubjectWritable {
    private static final long serialVersionUID = -6584467331451446363L;
    private static final Logger LOG = LoggerFactory.getLogger(SubjectDO.class);

    private IdentityDO identity;
    private ArrayList<RoleDO> roles = new ArrayList<>();

    @SuppressWarnings({ "UnusedDeclaration", "deprecation" })
    @Deprecated // Only for JPA, JAXB, builders and so on ...
    protected SubjectDO() {
    }

    protected SubjectDO(final UUID tenant, final UUID id, final NameableReadable name) {
        super(tenant, id, name);
    }

    @Override
    public Identity getIdentity() {
        return identity;
    }

    @Override
    public void setIdentity(Identity identity) {
        checkArgument(identity != null, "Can't set identity to NULL. You have to use unsetIdentity() to do this");
        unsetIdentity();

        this.identity = convertToIdentityDO(identity);
        this.identity.addSubject(this);

        LOG.info("Set identity for subject '{}'.", this);
    }

    public void unsetIdentity() {
        if (identity != null) {
            IdentityDO i = identity;

            identity = null;
            i.removeSubject(this);

            LOG.info("Removed identity from subject '{}'.", this);
        }
    }

    private IdentityDO convertToIdentityDO(Identity identity) {
        try {
            return (IdentityDO) identity;
        } catch (ClassCastException e) {
            return new IdentityBuilder().withIdentity(identity).build();
        }
    }

    @Override
    public List<RoleDO> getRoles() {
        ArrayList<RoleDO> result = new ArrayList<>();

        for (RoleDO r : roles) {
            result.addAll(convertToRoleDO(r.getRoles()));
        }

        return result;
    }

    @Override
    public List<RoleDO> getDirectAssignedRoles() {
        return Collections.unmodifiableList(roles);
    }

    @Override
    public void addRole(Role role) {
        if (role == null)
            return;

        RoleDO r = convertToRoleDO(role);

        if (!roles.contains(r)) {
            roles.add(r);

            LOG.info("Role '{}' added to subject '{}'.", role, this);
        }
    }

    @Override
    public void removeRole(Role role) {
        if (role == null)
            return;

        RoleDO r = convertToRoleDO(role);

        if (roles.contains(r)) {
            roles.remove(r);

            LOG.info("Role '{}' removed from subject '{}'.", role, this);
        }
    }

    private <R extends Role> RoleDO convertToRoleDO(R role) {
        try {
            return (RoleDO) role;
        } catch (ClassCastException e) {
            return new RoleBuilder().withRole(role).build();
        }
    }

    private List<RoleDO> convertToRoleDO(List<? extends Role> elements) {
        ArrayList<RoleDO> result = new ArrayList<>(elements.size());

        for (Role r : Lists.newArrayList(elements)) {
            result.add(convertToRoleDO(r));
        }

        return result;
    }

    @Override
    public String toString() {
        ToStringBuilder result = new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).append("id", id);

        if (identity != null)
            result.append("identity", identity);

        return result.append("name", getNameable()).build();
    }
}