a

554325746@qq.com

2019-12-25 38492bbaa63586e2f4877da0eaa01a082fd565a6

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package com.basic.security.dao;
 
import android.database.Cursor;
import android.text.TextUtils;
 
import com.basic.security.utils.Constants;
import com.basic.security.utils.FrameUtil;
 
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
 
public class SqliteManager {
 
    public static Map<String, List<String>> tableColumnNames = new HashMap<>();
 
    public static Map<String, String> cursorToModelAdapter(Cursor cursor, String table) {//
        Map<String, String> modelAdapter = new HashMap<>();
        String[] columnNames = cursor.getColumnNames();
        for (String columnName : columnNames) {
            modelAdapter.put(columnName, cursor.getString(cursor.getColumnIndex(columnName)));
        }
        modelAdapter.put("table", table);
        return modelAdapter;
    }
 
    private static String getTableName(String sql) {
        try {
            return sql.toLowerCase().substring(sql.indexOf("from") + "from".length()).trim().split(" ")[0].trim();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }
 
    public static List<Map<String, String>> findList(String sql) {
        List<Map<String, String>> modelAdapterList = new ArrayList<>();
        Cursor cursor = null;
        try {
            if (Constants.printSql) {
                System.out.println("sql=" + sql);
            }
            cursor = DatabaseManager.getDatabase().rawQuery(sql, null);
            if (cursor.moveToFirst()) {
                while (!cursor.isAfterLast()) {
                    modelAdapterList.add(cursorToModelAdapter(cursor, getTableName(sql)));
                    cursor.moveToNext();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
        return modelAdapterList;
    }
 
    public static void save(Map<String, String> modelAdapter) {
        try {
            if (modelAdapter != null) {
                GetInsertOrUpdateSql getInsertOrUpdateSql = new GetInsertOrUpdateSql(modelAdapter).invoke();
                String table = getInsertOrUpdateSql.getTable();
                String insertSql = getInsertOrUpdateSql.getInsertSql();
                if (Constants.printSql) {
                    System.out.println("insertsql=" + insertSql);
                }
                DatabaseManager.execSQL(insertSql);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    public static class GetInsertOrUpdateSql {
        private Map<String, String> modelAdapter;
        private String table;
        private String insertSql;
 
        public GetInsertOrUpdateSql(Map<String, String> modelAdapter) {
            this.modelAdapter = modelAdapter;
        }
 
        public String getTable() {
            return table;
        }
 
        public String getInsertSql() {
            return insertSql;
        }
 
        public GetInsertOrUpdateSql invoke() {
            Map<String, String> sqliteModel = modelAdapter;
            table = (String) sqliteModel.get("table");
            insertSql = "INSERT OR REPLACE INTO " + table + " ";
            List<String> paramNameList = new ArrayList<>();
            List<String> paramValueList = new ArrayList<>();
            String id = (String) sqliteModel.get("id");
            if (id == null) {
                id = UUID.randomUUID().toString();
                sqliteModel.put("id", id);
            }
            List<String> columnsNameList = tableColumnNames.get(table);
            boolean hasDelFlag = false;
            if (columnsNameList != null) {
                for (Map.Entry<String, String> entry : sqliteModel.entrySet()) {
                    String key = entry.getKey();
                    Object value = entry.getValue();
                    if (columnsNameList.contains(key)) {
                        if (key.contains("del_flag") && !TextUtils.isEmpty((String) value)) {
                            hasDelFlag = true;
                        }
                        paramNameList.add("`" + key + "`");
                        if (value == null) {
                            paramValueList.add("''");
                        } else {
                            if (value instanceof byte[]) {
                            } else {
                                paramValueList.add("'" + (String) value + "'");
                            }
                        }
                    }
                }
                if (!hasDelFlag) {
                    if (columnsNameList.contains("del_flag")) {
                        paramNameList.add("`del_flag`");
                        paramValueList.add("'0'");
                    }
                }
                insertSql += "(" + TextUtils.join(",", paramNameList) + ") VALUES (" +
                        TextUtils.join(",", paramValueList) + ")";
            }
            return this;
        }
    }
 
 
    public static Map<String, String> findById(String table, String id) {
        Cursor cursor = null;
        try {
            String sql = "select * from "+table+" where id = '" + id + "'";
            if (Constants.printSql) {
                System.out.println("findById="+sql
//                        + " " + FrameUtil.getFrames()
                );
            }
            cursor = DatabaseManager.getDatabase().rawQuery(sql, null);
            if (cursor.moveToFirst()) {
                return cursorToModelAdapter(cursor, table);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }
 
 
}