215 lines
9.0 KiB
Java
215 lines
9.0 KiB
Java
package io.dataease.service.chart;
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import com.google.gson.Gson;
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import com.google.gson.reflect.TypeToken;
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import io.dataease.base.domain.*;
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import io.dataease.base.mapper.ChartViewMapper;
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import io.dataease.commons.utils.BeanUtils;
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import io.dataease.controller.request.chart.ChartViewRequest;
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import io.dataease.datasource.constants.DatasourceTypes;
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import io.dataease.datasource.provider.DatasourceProvider;
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import io.dataease.datasource.provider.ProviderFactory;
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import io.dataease.datasource.request.DatasourceRequest;
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import io.dataease.datasource.service.DatasourceService;
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import io.dataease.dto.chart.ChartViewDTO;
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import io.dataease.dto.chart.ChartViewFieldDTO;
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import io.dataease.dto.chart.Series;
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import io.dataease.dto.dataset.DataTableInfoDTO;
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import io.dataease.service.dataset.DataSetTableFieldsService;
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import io.dataease.service.dataset.DataSetTableService;
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import org.apache.commons.collections4.CollectionUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.springframework.stereotype.Service;
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import javax.annotation.Resource;
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import java.math.BigDecimal;
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import java.text.MessageFormat;
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import java.util.*;
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import java.util.stream.Collectors;
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/**
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* @Author gin
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* @Date 2021/3/1 12:34 下午
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*/
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@Service
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public class ChartViewService {
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@Resource
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private ChartViewMapper chartViewMapper;
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@Resource
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private DataSetTableService dataSetTableService;
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@Resource
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private DatasourceService datasourceService;
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@Resource
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private DataSetTableFieldsService dataSetTableFieldsService;
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public ChartViewWithBLOBs save(ChartViewWithBLOBs chartView) {
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long timestamp = System.currentTimeMillis();
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chartView.setUpdateTime(timestamp);
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int i = chartViewMapper.updateByPrimaryKeyWithBLOBs(chartView);
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if (i == 0) {
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chartView.setId(UUID.randomUUID().toString());
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chartView.setCreateTime(timestamp);
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chartView.setUpdateTime(timestamp);
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chartViewMapper.insert(chartView);
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}
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return chartView;
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}
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public List<ChartViewWithBLOBs> list(ChartViewRequest chartViewRequest) {
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ChartViewExample chartViewExample = new ChartViewExample();
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ChartViewExample.Criteria criteria = chartViewExample.createCriteria();
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if (StringUtils.isNotEmpty(chartViewRequest.getSceneId())) {
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criteria.andSceneIdEqualTo(chartViewRequest.getSceneId());
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}
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if (StringUtils.isNotEmpty(chartViewRequest.getSort())) {
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chartViewExample.setOrderByClause(chartViewRequest.getSort());
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}
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return chartViewMapper.selectByExampleWithBLOBs(chartViewExample);
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}
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public ChartViewWithBLOBs get(String id) {
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return chartViewMapper.selectByPrimaryKey(id);
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}
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public void delete(String id) {
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chartViewMapper.deleteByPrimaryKey(id);
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}
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public ChartViewDTO getData(String id) throws Exception {
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ChartViewWithBLOBs view = chartViewMapper.selectByPrimaryKey(id);
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List<ChartViewFieldDTO> xAxis = new Gson().fromJson(view.getXAxis(), new TypeToken<List<ChartViewFieldDTO>>() {
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}.getType());
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List<ChartViewFieldDTO> yAxis = new Gson().fromJson(view.getYAxis(), new TypeToken<List<ChartViewFieldDTO>>() {
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}.getType());
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List<String> x = new ArrayList<>();
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List<Series> series = new ArrayList<>();
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if (CollectionUtils.isEmpty(xAxis) || CollectionUtils.isEmpty(yAxis)) {
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ChartViewDTO dto = new ChartViewDTO();
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BeanUtils.copyBean(dto, view);
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return dto;
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}
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// List<String> xIds = xAxis.stream().map(DatasetTableField::getId).collect(Collectors.toList());
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// List<String> yIds = yAxis.stream().map(DatasetTableField::getId).collect(Collectors.toList());
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// List<DatasetTableField> xList = dataSetTableFieldsService.getListByIds(xIds);
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// List<DatasetTableField> yList = dataSetTableFieldsService.getListByIds(yIds);
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// 获取数据集
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DatasetTable table = dataSetTableService.get(view.getTableId());
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// todo 判断连接方式，直连或者定时抽取 table.mode
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Datasource ds = datasourceService.get(table.getDataSourceId());
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DatasourceProvider datasourceProvider = ProviderFactory.getProvider(ds.getType());
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DatasourceRequest datasourceRequest = new DatasourceRequest();
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datasourceRequest.setDatasource(ds);
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DataTableInfoDTO dataTableInfoDTO = new Gson().fromJson(table.getInfo(), DataTableInfoDTO.class);
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if (StringUtils.equalsIgnoreCase(table.getType(), "db")) {
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datasourceRequest.setTable(dataTableInfoDTO.getTable());
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datasourceRequest.setQuery(getSQL(ds.getType(), dataTableInfoDTO.getTable(), xAxis, yAxis));
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} else if (StringUtils.equalsIgnoreCase(table.getType(), "sql")) {
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datasourceRequest.setQuery(getSQL(ds.getType(), " (" + dataTableInfoDTO.getSql() + ") AS tmp ", xAxis, yAxis));
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}
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List<String[]> data = datasourceProvider.getData(datasourceRequest);
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// todo 处理结果,目前做一个单系列图表，后期图表组件再扩展
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for (ChartViewFieldDTO y : yAxis) {
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Series series1 = new Series();
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series1.setName(y.getName());
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series1.setType(view.getType());
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series1.setData(new ArrayList<>());
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series.add(series1);
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}
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for (String[] d : data) {
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StringBuilder a = new StringBuilder();
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BigDecimal b = new BigDecimal("0");
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for (int i = 0; i < xAxis.size(); i++) {
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if (i == xAxis.size() - 1) {
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a.append(d[i]);
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} else {
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a.append(d[i]).append("\n");
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}
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}
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x.add(a.toString());
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for (int i = xAxis.size(); i < xAxis.size() + yAxis.size(); i++) {
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int j = i - xAxis.size();
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series.get(j).getData().add(new BigDecimal(d[i]));
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}
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}
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Map<String, Object> map = new HashMap<>();
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map.put("x", x);
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map.put("series", series);
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ChartViewDTO dto = new ChartViewDTO();
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BeanUtils.copyBean(dto, view);
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dto.setData(map);
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return dto;
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}
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public String getSQL(String type, String table, List<ChartViewFieldDTO> xAxis, List<ChartViewFieldDTO> yAxis) {
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DatasourceTypes datasourceType = DatasourceTypes.valueOf(type);
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switch (datasourceType) {
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case mysql:
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return transMysqlSQL(table, xAxis, yAxis);
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case sqlServer:
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default:
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return "";
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}
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}
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public String transMysqlSQL(String table, List<ChartViewFieldDTO> xAxis, List<ChartViewFieldDTO> yAxis) {
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// TODO 字段汇总 排序等
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String[] field = yAxis.stream().map(y -> "CAST(" + y.getSummary() + "(" + y.getOriginName() + ") AS DECIMAL(20,2)) AS _" + y.getSummary() + "_" + y.getOriginName()).toArray(String[]::new);
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String[] group = xAxis.stream().map(ChartViewFieldDTO::getOriginName).toArray(String[]::new);
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String[] order = yAxis.stream().filter(y -> StringUtils.isNotEmpty(y.getSort()) && !StringUtils.equalsIgnoreCase(y.getSort(), "none"))
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.map(y -> "_" + y.getSummary() + "_" + y.getOriginName() + " " + y.getSort()).toArray(String[]::new);
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String sql = MessageFormat.format("SELECT {0},{1} FROM {2} WHERE 1=1 {3} GROUP BY {4} ORDER BY null,{5}",
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StringUtils.join(group, ","),
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StringUtils.join(field, ","),
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table,
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"",
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StringUtils.join(group, ","),
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StringUtils.join(order, ","));
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if (sql.endsWith(",")) {
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sql = sql.substring(0, sql.length() - 1);
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}
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// 如果是对结果字段过滤，则再包裹一层sql
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String[] resultFilter = yAxis.stream().filter(y -> CollectionUtils.isNotEmpty(y.getFilter()) && y.getFilter().size() > 0)
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.map(y -> {
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String[] s = y.getFilter().stream().map(f -> "AND _" + y.getSummary() + "_" + y.getOriginName() + transMysqlFilterTerm(f.getTerm()) + f.getValue()).toArray(String[]::new);
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return StringUtils.join(s, " ");
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}).toArray(String[]::new);
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if (resultFilter.length == 0) {
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return sql;
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} else {
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String filterSql = MessageFormat.format("SELECT * FROM {0} WHERE 1=1 {1}",
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"(" + sql + ") AS tmp",
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StringUtils.join(resultFilter, " "));
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return filterSql;
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}
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}
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public String transMysqlFilterTerm(String term) {
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switch (term) {
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case "eq":
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return " = ";
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case "not_eq":
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return " <> ";
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case "lt":
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return " < ";
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case "le":
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return " <= ";
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case "gt":
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return " > ";
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case "ge":
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return " >= ";
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case "null":
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return " IS NULL ";
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case "not_null":
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return " IS NOT NULL ";
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default:
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return "";
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}
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}
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}
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