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Java Framework based on Spring Framework, Freemarker and Simplicity
There is a newer version: 1.189
package com.clickntap.api;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;

import com.clickntap.hub.BOManager;
import com.clickntap.smart.SmartContext;
import com.clickntap.tool.bean.BeanUtils;
import com.clickntap.tool.jdbc.JdbcManager;
import com.clickntap.utils.ConstUtils;
import com.clickntap.utils.IOUtils;

import freemarker.template.utility.StringUtil;

public class AdvancedSearch {

  private JdbcManager db;
  private String searchTemplate;
  private BOApp app;

  public AdvancedSearch() throws Exception {
    init();
  }

  public void setApp(BOApp app) {
    this.app = app;
  }

  private void init() throws Exception {
    Resource queryResource = new ClassPathResource("com/clickntap/api/query.sql");
    InputStream in = queryResource.getInputStream();
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    IOUtils.copy(in, out);
    searchTemplate = new String(out.toByteArray(), ConstUtils.UTF_8);
    out.close();
    in.close();
  }

  public int count(JSONObject json, SmartContext ctx, JSONObject data) throws Exception {
    AdvancedSearchFilter filter = new AdvancedSearchFilter();

    try {
      data.put("limit", json.get("limit"));
      data.put("from", json.get("from"));
    } catch (Exception e) {
    }
    filter.setCount(true);
    filter.setJson(json);
    for (BO bo : (List) db.queryScript(searchTemplate, filter, Class.forName(json.getString("class")))) {
      return Integer.parseInt(bo.get("count").toString());
    }
    return 0;
  }

  public List sql(String sql, SmartContext ctx, JSONObject data) throws Exception {
    List items = new ArrayList();
    AdvancedSearchFilter filter = new AdvancedSearchFilter();
    List list = db.queryScript(sql, filter, Class.forName("com.clickntap.api.BO"));
    for (BO bo : (List) list) {
      bo.setApp((BOManager) ctx.getBean("app"));
      JSONObject item = new JSONObject();
      item.put("id", bo.getId());
      for (String name : bo.valuesKeySet()) {
        try {
          item.put(name, bo.get(name));
        } catch (Exception e) {
        }
      }
      items.add(item);
    }
    return items;
  }

  public List run(JSONObject json, SmartContext ctx, JSONObject data, boolean sortable) throws Exception {
    AdvancedSearchFilter filter = new AdvancedSearchFilter();
    try {
      String[] sorts = StringUtil.split(ctx.param("sort"), ',');
      List sort = new ArrayList();
      for (int i = 0; i < sorts.length; i++) {
        String[] parts = StringUtil.split(sorts[i], '|');
        JSONObject item = new JSONObject();
        item.put("name", parts[0]);
        item.put("type", parts[1]);
        sort.add(item);
      }
      if (sortable) {
        json.put("sort", sort);
      }
    } catch (Exception e) {
    }

    filter.setCount(false);
    filter.setJson(json);
    List items = new ArrayList();
    List list = db.queryScript(searchTemplate, filter, Class.forName(json.getString("class")));
    for (BO bo : (List) list) {
      if (app == null) {
        bo.setApp((BOManager) ctx.getBean("app"));
      } else {
        bo.setApp(app);
      }
      JSONObject item = new JSONObject();
      item.put("id", bo.getId());
      item.put("className", bo.getClass().getSimpleName());
      if (json.has("fields")) {
        JSONArray fields = json.getJSONArray("fields");
        for (int i = 0; i < fields.length(); i++) {
          String field = fields.getString(i);
          String fieldKey = field;
          if (field.contains(".")) {
            fieldKey = fieldKey.replace(".", "_");
          }
          if (field.contains("[")) {
            fieldKey = fieldKey.replace("[", "_").replace("]", "_");
          }
          fieldKey = AdvancedSearchFilter.toCamelCase(fieldKey);
          field = AdvancedSearchFilter.toCamelCase(field);
          try {
            if (field.startsWith("this.")) {
              field = field.substring(5);
            }
            Object value = BeanUtils.getValue(bo, field);
            if (value instanceof List) {
              List values = new ArrayList();
              for (BO valueItem : (List) value) {
                values.add(valueItem.json(false));
              }
              item.put(fieldKey, values);
            } else if (value instanceof BO) {
              item.put(fieldKey, ((BO) value).json(false));
            } else {
              item.put(fieldKey, value);
            }
          } catch (Exception e) {
          }
        }
      }
      if (json.has("selectFields")) {
        JSONArray fields = json.getJSONArray("selectFields");
        for (int i = 0; i < fields.length(); i++) {
          String name = fields.getJSONObject(i).getString("name");
          try {
            item.put(name, bo.get(name));
          } catch (Exception e) {
          }
        }
      }
      // System.out.println((System.currentTimeMillis()-t)+" millis");
      items.add(item);
    }

    return items;
  }

  public void setDb(JdbcManager db) {
    this.db = db;
  }

}