org.socialsignin.spring.data.dynamodb.repository.support.EnableScanAnnotationPermissions.java Source code

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Here is the source code for org.socialsignin.spring.data.dynamodb.repository.support.EnableScanAnnotationPermissions.java

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/*
 * Copyright 2013 the original author or authors.
 *
 * 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 org.socialsignin.spring.data.dynamodb.repository.support;

import java.lang.reflect.Method;

import org.socialsignin.spring.data.dynamodb.repository.EnableScan;
import org.socialsignin.spring.data.dynamodb.repository.EnableScanCount;
import org.springframework.data.domain.Pageable;
import org.springframework.util.ReflectionUtils;

/**
 * 
 * @author Michael Lavelle
 * 
 */
public class EnableScanAnnotationPermissions implements EnableScanPermissions {

    private boolean findAllUnpaginatedScanEnabled = false;
    private boolean findAllPaginatedScanEnabled = false;

    private boolean findAllUnpaginatedScanCountEnabled = false;

    private boolean countUnpaginatedScanEnabled = false;
    private boolean deleteAllUnpaginatedScanEnabled = false;

    public EnableScanAnnotationPermissions(Class<?> repositoryInterface) {
        // Check to see if global EnableScan is declared at interface level
        if (repositoryInterface.isAnnotationPresent(EnableScan.class)) {
            this.findAllUnpaginatedScanEnabled = true;
            this.countUnpaginatedScanEnabled = true;
            this.deleteAllUnpaginatedScanEnabled = true;
            this.findAllPaginatedScanEnabled = true;
        } else {
            // Check declared methods for EnableScan annotation
            Method[] methods = ReflectionUtils.getAllDeclaredMethods(repositoryInterface);
            for (Method method : methods) {

                if (!method.isAnnotationPresent(EnableScan.class) || method.getParameterTypes().length > 0) {
                    // Only consider methods which have the EnableScan
                    // annotation and which accept no parameters
                    continue;
                }

                if (method.getName().equals("findAll")) {
                    findAllUnpaginatedScanEnabled = true;
                    continue;
                }

                if (method.getName().equals("deleteAll")) {
                    deleteAllUnpaginatedScanEnabled = true;
                    continue;
                }

                if (method.getName().equals("count")) {
                    countUnpaginatedScanEnabled = true;
                    continue;
                }

            }
            for (Method method : methods) {

                if (!method.isAnnotationPresent(EnableScanCount.class) || method.getParameterTypes().length != 1) {
                    // Only consider methods which have the EnableScanCount
                    // annotation and which have a single pageable parameter
                    continue;
                }

                if (method.getName().equals("findAll")
                        && Pageable.class.isAssignableFrom(method.getParameterTypes()[0])) {
                    findAllUnpaginatedScanCountEnabled = true;
                    continue;
                }

            }
            for (Method method : methods) {

                if (!method.isAnnotationPresent(EnableScan.class) || method.getParameterTypes().length != 1) {
                    // Only consider methods which have the EnableScan
                    // annotation and which have a single pageable parameter
                    continue;
                }

                if (method.getName().equals("findAll")
                        && Pageable.class.isAssignableFrom(method.getParameterTypes()[0])) {
                    findAllPaginatedScanEnabled = true;
                    continue;
                }

            }
        }
        if (!findAllUnpaginatedScanCountEnabled && repositoryInterface.isAnnotationPresent(EnableScanCount.class)) {
            findAllUnpaginatedScanCountEnabled = true;
        }

    }

    @Override
    public boolean isFindAllUnpaginatedScanEnabled() {
        return findAllUnpaginatedScanEnabled;

    }

    @Override
    public boolean isDeleteAllUnpaginatedScanEnabled() {
        return deleteAllUnpaginatedScanEnabled;
    }

    @Override
    public boolean isCountUnpaginatedScanEnabled() {
        return countUnpaginatedScanEnabled;
    }

    @Override
    public boolean isFindAllUnpaginatedScanCountEnabled() {
        return findAllUnpaginatedScanCountEnabled;
    }

    @Override
    public boolean isFindAllPaginatedScanEnabled() {
        return findAllPaginatedScanEnabled;
    }

}