| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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.apache.cloudstack.api; |
| |
| import java.util.Map; |
| |
| import com.cloud.exception.InvalidParameterValueException; |
| import com.cloud.utils.exception.CSExceptionErrorCode; |
| |
| public abstract class BaseListCmd extends BaseCmd implements IBaseListCmd { |
| |
| private static Long s_maxPageSize = null; |
| public static final Long s_pageSizeUnlimited = -1L; |
| |
| // /////////////////////////////////////////////////// |
| // ///////// BaseList API parameters ///////////////// |
| // /////////////////////////////////////////////////// |
| |
| @Parameter(name = ApiConstants.KEYWORD, type = CommandType.STRING, description = "List by keyword") |
| private String keyword; |
| |
| // FIXME: Need to be able to specify next/prev/first/last, so Integer might not be right |
| @Parameter(name = ApiConstants.PAGE, type = CommandType.INTEGER) |
| private Integer page; |
| |
| @Parameter(name = ApiConstants.PAGE_SIZE, type = CommandType.INTEGER) |
| private Integer pageSize; |
| |
| // /////////////////////////////////////////////////// |
| // ///////////////// Accessors /////////////////////// |
| // /////////////////////////////////////////////////// |
| |
| public BaseListCmd() { |
| } |
| |
| @Override |
| public String getKeyword() { |
| return keyword; |
| } |
| |
| @Override |
| public Integer getPage() { |
| return page; |
| } |
| |
| @Override |
| public Integer getPageSize() { |
| if (pageSize != null && s_maxPageSize.longValue() != s_pageSizeUnlimited && pageSize.longValue() > s_maxPageSize.longValue()) { |
| throw new InvalidParameterValueException("Page size can't exceed max allowed page size value: " + s_maxPageSize.longValue()); |
| } |
| |
| if (pageSize != null && pageSize.longValue() == s_pageSizeUnlimited && page != null) { |
| throw new InvalidParameterValueException("Can't specify page parameter when pagesize is -1 (Unlimited)"); |
| } |
| |
| return pageSize; |
| } |
| |
| @Override |
| public void configure() { |
| if (s_maxPageSize == null) { |
| if (_configService.getDefaultPageSize().longValue() != s_pageSizeUnlimited) { |
| s_maxPageSize = _configService.getDefaultPageSize(); |
| } else { |
| s_maxPageSize = s_pageSizeUnlimited; |
| } |
| } |
| } |
| |
| @Override |
| public long getEntityOwnerId() { |
| // no owner is needed for list command |
| return 0; |
| } |
| |
| @Override |
| public Long getPageSizeVal() { |
| Long defaultPageSize = s_maxPageSize; |
| final Integer pageSizeInt = getPageSize(); |
| if (pageSizeInt != null) { |
| defaultPageSize = pageSizeInt.longValue(); |
| } |
| if (defaultPageSize.longValue() == s_pageSizeUnlimited) { |
| defaultPageSize = null; |
| } |
| |
| return defaultPageSize; |
| } |
| |
| @Override |
| public Long getStartIndex() { |
| Long startIndex = Long.valueOf(0); |
| final Long pageSizeVal = getPageSizeVal(); |
| |
| if (pageSizeVal == null) { |
| startIndex = null; |
| } else if (page != null) { |
| final int pageNum = page.intValue(); |
| if (pageNum > 0) { |
| startIndex = Long.valueOf(pageSizeVal * (pageNum - 1)); |
| } |
| } |
| return startIndex; |
| } |
| |
| @Override |
| public ApiCommandJobType getInstanceType() { |
| return ApiCommandJobType.None; |
| } |
| |
| @Override |
| public void validateSpecificParameters(final Map<String, String> params){ |
| super.validateSpecificParameters(params); |
| |
| final Object pageSizeObj = params.get(ApiConstants.PAGE_SIZE); |
| Long pageSize = null; |
| if (pageSizeObj != null) { |
| pageSize = Long.valueOf((String)pageSizeObj); |
| } |
| |
| if (params.get(ApiConstants.PAGE) == null && |
| pageSize != null && |
| !pageSize.equals(BaseListCmd.s_pageSizeUnlimited)) { |
| final ServerApiException ex = new ServerApiException(ApiErrorCode.PARAM_ERROR, "\"page\" parameter is required when \"pagesize\" is specified"); |
| ex.setCSErrorCode(CSExceptionErrorCode.getCSErrCode(ex.getClass().getName())); |
| throw ex; |
| } else if (pageSize == null && (params.get(ApiConstants.PAGE) != null)) { |
| throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "\"pagesize\" parameter is required when \"page\" is specified"); |
| } |
| } |
| } |