Saiku嵌入系统使用时传参数访问saiku
Saiku通过iframe嵌入其他系统使用时，我们可以设定参数信息，然后根据url中参数对结果进行筛选哦。
这里我们实现的是根据日期字段进行范围查询，URL请求中需要多加如下两个参数 startdate , enddate ,也就是开始日期与结束日期。
实现日期的范围查询 saiku date range，主要有以下步骤
1. 修改源代码 saiku-ui 项目下的 jssaikumodelsQuery.js（如果你不是本地编译的源码也可以直接修改 saiku-server omcatwebappsROOTjssaikumodels 目录下的 Query.js ）
在Query.js下的 run方法中增加如下代码段：
//根據用戶輸入的開始日期與結束日期查詢範圍數據
var dimensionArr = exModel.queryModel.axes.ROWS.hierarchies; //取出行信息中的所有维度信息 dimension,用一个数组接收
for(var i=0;i<dimensionArr.length;i++){
//判断维度信息中是否有countdate这个时间维度（这是固定的）
if(dimensionArr[i]!=null && dimensionArr[i].dimension == "countdate" ){
var paramsURI = Saiku.URLParams.paramsURI(); //得到URl中传过来的参数信息
//判断参数是否为空
if(paramsURI.startdate != null && paramsURI.startdate != undefined && paramsURI.startdate != ""&&
paramsURI.enddate != null && paramsURI.enddate != undefined && paramsURI.enddate != ""){
var startdate=paramsURI.startdate; //获取开始日期
var enddate=paramsURI.enddate; //获取结束日期
//更改level下的mdx表达式,将日期范围的筛选信息添加到mdx表达式中
dimensionArr[i].levels.countdate.mdx="[countdate].[countdate].[countdate].["+startdate+"]:[countdate].[countdate].[countdate].["+enddate+"]";
}
}
}
这里最主要的是就是找到需要改动的位置了：(文末提供了修改后完整的Query.js文件)
从 exModel.queryModel.axes.ROWS.hierarchies 这个数组中找到countdate ,然后再修改countdate对应 levels.coundate下的mdx值。
层级关系如下图：（0是可变的哟，可能是下标1,2,3..... 所以上面代码中用到了 for循环去找 countdate ）
2. saiku中xml文件中的cube中必须配置日期字段，我用的是countdate字段，配置如下
<Dimension name="countdate" foreignKey="ID" >
<Hierarchy hasAll="true" primaryKey="ID" allMemberName="countdate" >
<Level name="countdate" table="aaa" column="countdate" type='Date' uniqueMembers="false" /> <!--这里的 column=countdate ，countdate为数据库的表中的日期字段名，可根据自己的表灵活变动啦-->
</Hierarchy>
</Dimension>
3.Saiku配置数据信息的时候需要将日期字段拖到 行 数据框
4.使用url发请求访问saiku中需带入startdate,enddate参数 （如果不带入这两个参数的话就不会进行范围筛选啦！！！然后就会正常查询全量数据）
模板URL如下：
http://10.99.77.78:8080/?username=admin&password=aaa&startdate=2019-03-06%2000:00:00.0&enddate=2019-03-10%2000:00:00.0&plugin=false&mode=view#query/open//KPI/aa.saiku
URL解析
http://10.99.77.78:8080/ #是我的saiku的访问地址
username=admin&password=aaa #分别是我登录saiku的用户名以及密码
startdate=2019-03-06%2000:00:00.0&enddate=2019-03-10%2000:00:00.0 #是我设定的开始时间以及结束时间，我想查询countdate值为3.6到3.10的数据。这里需要说明一下我的countdate中有2019-03-06 00:00:00.0 ,2019-03-10 00:00:00.0 这两个值哦。
plugin=false&mode=view#query/open/ #这里指不以插件的方式嵌入，嵌入的模式为view(会带出导出excel那一排工具栏信息)
/KPI/aa.saiku #这个就是我保存的数据信息啦，我自己新建了个KPI目录，然后保存的数据命名为 aa .
5.过滤结果如下图：
解析：( 其实上面添加的注释已经比较详细的，嘻嘻 ，需要注意的主要有以下4点)
1. 数据库中必须有一个countdate日期字段（名字当然可以随意）
2.Schema文件中 对应的cube信息中必须配置 countdate字段如下：(关键的是 Dimension下的name Hierarchy下的allMemerName Level下的name 命名都为countdate )
<Dimension name="countdate" foreignKey="ID" >
<Hierarchy hasAll="true" primaryKey="ID" allMemberName="countdate" >
<Level name="countdate" table="aaa" column="countdate" type='Date' uniqueMembers="false" /> <!--这里的 column=countdate ，countdate为数据库的表中的日期字段名，可根据自己的表更改-->
</Hierarchy>
</Dimension>
3.如果需要根据日期进行范围筛选，url中必须添加参数 startdate,enddate 哦
4.想要获取正确的筛选结果，startdate以及enddate的值必须是当前cube中已有的值！！！（不然就会报错啦，就像你在saiku中使用参数一样，参数值一定要填写当前结果中已有的值，关于日期就很较真啦，时分秒都要对应上才行哦）
>>>更改后的Query.js文件
这里再提供一下修改之后的完整Query.js ，其它地方都没有改动，就只是添加了上方内容，详情如下
Query.js
/*
* Copyright 2012 OSBI Ltd
*
* 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.
*/
/**
* Workspace query
*/
var Query = Backbone.Model.extend({
formatter: Settings.CELLSET_FORMATTER,
properties: null,
initialize: function(args, options) {
// Save cube
_.extend(this, options);
// Bind `this`
_.bindAll(this, "run");
// Generate a unique query id
this.uuid = 'xxxxxxxx-xxxx-xxxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g,
function (c) {
var r = Math.random() * 16 | 0,
v = c == 'x' ? r : (r & 0x3 | 0x8);
return v.toString(16);
}).toUpperCase();
this.model = _.extend({ name: this.uuid }, SaikuOlapQueryTemplate);
if (args.cube) {
this.model.cube = args.cube;
}
this.helper = new SaikuOlapQueryHelper(this);
// Initialize properties, action handler, and result handler
this.action = new QueryAction({}, { query: this });
this.result = new Result({ limit: Settings.RESULT_LIMIT }, { query: this });
this.scenario = new QueryScenario({}, { query: this });
// A flag to tell who changed selection members
this.updatedSelectionFromModal = false;
},
parse: function(response) {
// Assign id so Backbone knows to PUT instead of POST
this.id = this.uuid;
if (response.name) {
this.id = response.name;
this.uuid = response.name;
}
this.model = _.extend(this.model, response);
this.model.properties = _.extend({}, Settings.QUERY_PROPERTIES, this.model.properties);
},
setProperty: function(key, value) {
this.model.properties[key] = value;
},
getProperty: function(key) {
return this.model.properties[key];
},
syncSelectionsModalAndUpdateParameters: function() {
if (this.updatedSelectionFromModal) {
var mParameters = this.helper.model().parameters;
for (var mKey in mParameters) {
var mVal = mParameters[mKey];
var selections = this.helper.getSelectionsForParameter(mKey);
mVal = selections.map(function(sel) { return sel.caption; }).join();
mParameters[mKey] = mVal;
}
} else {
var mParameters = this.helper.model().parameters;
for (var mKey in mParameters) {
var mVal = mParameters[mKey];
var mLevel = this.helper.getLevelForParameter(mKey);
var selections = this.helper.getSelectionsForParameter(mKey);
if (mVal !== null && mVal !== undefined) {
this.helper.setSelectionsForParameter(mKey, _.filter(selections, function(sel) {
var containsParam = false;
_.each(mVal.split(','), function (v) {
if (sel.caption === v) {
containsParam = true;
return false;
}
});
return containsParam;
}));
}
}
}
this.updatedSelectionFromModal = false;
},
run: function(force, mdx) {
this.syncSelectionsModalAndUpdateParameters();
var self = this;
// Check for automatic execution
Saiku.ui.unblock();
if (typeof this.model.properties != "undefined" && this.model.properties['saiku.olap.query.automatic_execution'] === false &&
(force === false || force === undefined || force === null)) {
return;
}
this.workspace.unblock();
$(this.workspace.el).find(".workspace_results_info").empty();
this.workspace.trigger('query:run');
this.result.result = null;
var validated = false;
var errorMessage = '<span class="i18n">Query Validation failed!</span>';
var exModel = this.helper.model();
for(var k in this.attributes) {
var att = this.attributes[k];
if(k.substring(0,5)==="PARAM"){
var p = k.substring(5, k.length);
exModel.parameters[p] = att;
}
}
if (exModel.queryType == "OLAP") {
if (exModel.type == "QUERYMODEL") {
var columnsOk = Object.keys(exModel.queryModel.axes.COLUMNS.hierarchies).length > 0;
var rowsOk = Object.keys(exModel.queryModel.axes.ROWS.hierarchies).length > 0;
var detailsOk = exModel.queryModel.details.axis == 'COLUMNS' && exModel.queryModel.details.measures.length > 0;
if (!rowsOk || !columnsOk || !detailsOk) {
errorMessage = "";
}
if (!columnsOk && !detailsOk) {
errorMessage += '<span class="i18n">You need to include at least one measure or a level on columns for a valid query.</span>';
}
if(!rowsOk) {
errorMessage += '<span class="i18n">You need to include at least one level on rows for a valid query.</span>';
}
if ( (columnsOk || detailsOk) && rowsOk) {
validated = true;
}
} else if (exModel.type == "MDX") {
validated = (exModel.mdx && exModel.mdx.length > 0);
if (!validated) {
errorMessage = '<span class="i18n">You need to enter some MDX statement to execute.</span>';
}
}
}
if (!validated) {
this.workspace.table.clearOut();
$(this.workspace.processing).html(errorMessage).show();
this.workspace.adjust();
Saiku.i18n.translate();
return;
}
// Run it
this.workspace.table.clearOut();
$(this.workspace.processing).html('<span class="processing_image"> </span> <span class="i18n">Running query...</span> [ <a class="cancel i18n" href="#cancel">Cancel</a> ]').show();
this.workspace.adjust();
this.workspace.trigger('query:fetch');
Saiku.i18n.translate();
var message = '<span class="processing_image"> </span> <span class="i18n">Running query...</span> [ <a class="cancel i18n" href="#cancel">Cancel</a> ]';
this.workspace.block(message);
/*
TODO: i wonder if we should clean up the model (name and captions etc.)
delete this.model.queryModel.axes['FILTER'].name;
*/
//根據用戶輸入的開始日期與結束日期查詢範圍數據
var dimensionArr = exModel.queryModel.axes.ROWS.hierarchies; //取出行信息中的所有维度信息 dimension,用一个数组接收
for(var i=0;i<dimensionArr.length;i++){
//判断维度信息中是否有countdate这个时间维度（这是固定的）
if(dimensionArr[i]!=null && dimensionArr[i].dimension == "countdate" ){
var paramsURI = Saiku.URLParams.paramsURI(); //get the param from url
//判断参数是否为空
if(paramsURI.startdate != null && paramsURI.startdate != undefined && paramsURI.startdate != ""&&
paramsURI.enddate != null && paramsURI.enddate != undefined && paramsURI.enddate != ""){
var startdate=paramsURI.startdate;
var enddate=paramsURI.enddate;
//更改level下的mdx表达式
dimensionArr[i].levels.countdate.mdx="[countdate].[countdate].[countdate].["+startdate+"]:[countdate].[countdate].[countdate].["+enddate+"]";
}
}
}
this.result.save({},{ contentType: "application/json", data: JSON.stringify(exModel), error: function() {
Saiku.ui.unblock();
var errorMessage = '<span class="i18n">Error executing query. Please check the server logs or contact your administrator!</span>';
self.workspace.table.clearOut();
$(self.workspace.processing).html(errorMessage).show();
self.workspace.adjust();
Saiku.i18n.translate();
} });
},
enrich: function() {
var self = this;
this.workspace.query.action.post("/../enrich", {
contentType: "application/json",
data: JSON.stringify(self.model),
async: false,
success: function(response, model) {
self.model = model;
}
});
},
url: function() {
return "api/query/" + encodeURI(this.uuid);
}
});