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·1580 lines (1411 loc) · 48.3 KB
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/*Copyright ©2016 TommyLemon(https://github.com/TommyLemon/APIJSON)
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.*/
package zuo.biao.apijson.server;
import static zuo.biao.apijson.JSONObject.KEY_COLUMN;
import static zuo.biao.apijson.JSONObject.KEY_COMBINE;
import static zuo.biao.apijson.JSONObject.KEY_GROUP;
import static zuo.biao.apijson.JSONObject.KEY_HAVING;
import static zuo.biao.apijson.JSONObject.KEY_ID;
import static zuo.biao.apijson.JSONObject.KEY_ID_IN;
import static zuo.biao.apijson.JSONObject.KEY_ORDER;
import static zuo.biao.apijson.JSONObject.KEY_ROLE;
import static zuo.biao.apijson.JSONObject.KEY_SCHEMA;
import static zuo.biao.apijson.JSONObject.KEY_USER_ID;
import static zuo.biao.apijson.JSONObject.KEY_USER_ID_IN;
import static zuo.biao.apijson.RequestMethod.DELETE;
import static zuo.biao.apijson.RequestMethod.GET;
import static zuo.biao.apijson.RequestMethod.GETS;
import static zuo.biao.apijson.RequestMethod.HEADS;
import static zuo.biao.apijson.RequestMethod.POST;
import static zuo.biao.apijson.RequestMethod.PUT;
import static zuo.biao.apijson.SQL.AND;
import static zuo.biao.apijson.SQL.NOT;
import static zuo.biao.apijson.SQL.OR;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.regex.Pattern;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.annotation.JSONField;
import zuo.biao.apijson.Log;
import zuo.biao.apijson.RequestMethod;
import zuo.biao.apijson.RequestRole;
import zuo.biao.apijson.SQL;
import zuo.biao.apijson.StringUtil;
import zuo.biao.apijson.server.exception.NotExistException;
import zuo.biao.apijson.server.model.Column;
import zuo.biao.apijson.server.model.Table;
/**config sql for JSON Request
* @author Lemon
*/
public abstract class AbstractSQLConfig implements SQLConfig {
private static final String TAG = "SQLConfig";
/**
* 表名映射，隐藏真实表名，对安全要求很高的表可以这么做
*/
public static final Map<String, String> TABLE_KEY_MAP;
static {
TABLE_KEY_MAP = new HashMap<String, String>();
TABLE_KEY_MAP.put(Table.class.getSimpleName(), Table.TAG);
TABLE_KEY_MAP.put(Column.class.getSimpleName(), Column.TAG);
}
private long id; //Table的id
private RequestMethod method; //操作方法
private boolean prepared = true; //预编译
/**
* TODO 被关联的表通过就忽略关联的表？(这个不行 User:{"sex@":"/Comment/toId"})
*/
private RequestRole role; //发送请求的用户的角色
private String schema; //Table所在的数据库
private String table; //Table名
private String group; //分组方式的字符串数组，','分隔
private String having; //聚合函数的字符串数组，','分隔
private String order; //排序方式的字符串数组，','分隔
private String column; //Table内字段名(或函数名，仅查询操作可用)的字符串数组，','分隔
private String values; //对应Table内字段的值的字符串数组，','分隔
private Map<String, Object> content; //Request内容，key:value形式，column = content.keySet()，values = content.values()
private Map<String, Object> where; //筛选条件，key:value形式
private Map<String, List<String>> combine; //条件组合，{ "&":[key], "|":[key], "!":[key] }
//array item <<<<<<<<<<
private int count; //Table数量
private int page; //Table所在页码
private int position; //Table在[]中的位置
private int query; //JSONRequest.query
private int type; //ObjectParser.type
//array item >>>>>>>>>>
private boolean test; //测试
private boolean cacheStatic; //静态缓存
public AbstractSQLConfig(RequestMethod method) {
setMethod(method);
}
public AbstractSQLConfig(RequestMethod method, String table) {
this(method);
setTable(table);
}
public AbstractSQLConfig(RequestMethod method, int count, int page) {
this(method);
setCount(count);
setPage(page);
}
@NotNull
@Override
public RequestMethod getMethod() {
if (method == null) {
method = GET;
}
return method;
}
@Override
public AbstractSQLConfig setMethod(RequestMethod method) {
this.method = method;
return this;
}
@Override
public boolean isPrepared() {
return prepared;
}
@Override
public AbstractSQLConfig setPrepared(boolean prepared) {
this.prepared = prepared;
return this;
}
@Override
public long getId() {
return id;
}
@Override
public AbstractSQLConfig setId(long id) {
this.id = id;
return this;
}
@Override
public RequestRole getRole() {
//不能 @NotNull , AbstractParser#getSQLObject 内当getRole() == null时填充默认值
return role;
}
public AbstractSQLConfig setRole(String roleName) throws Exception {
return setRole(RequestRole.get(roleName));
}
@Override
public AbstractSQLConfig setRole(RequestRole role) {
this.role = role;
return this;
}
@Override
public String getSchema() {
String sqlTable = getSQLTable();
if (sqlTable != null && sqlTable.startsWith("`")) {
return SCHEMA_INFORMATION;
}
return schema;
}
@Override
public AbstractSQLConfig setSchema(String schema) {
if (schema != null) {
String s = schema.startsWith("`") && schema.endsWith("`") ? schema.substring(1, schema.length() - 1) : schema;
if (StringUtil.isName(s) == false) {
throw new IllegalArgumentException("@schema:value 中value必须是1个单词！");
}
}
this.schema = schema;
return this;
}
/**请求传进来的Table名
* @return
* @see {@link #getSQLTable()}
*/
@Override
public String getTable() {
return table;
}
/**数据库里的真实Table名
* 通过 {@link #TABLE_KEY_MAP} 映射
* @return
*/
@JSONField(serialize = false)
@Override
public String getSQLTable() {
return TABLE_KEY_MAP.containsKey(table) ? TABLE_KEY_MAP.get(table) : table;
}
@JSONField(serialize = false)
@Override
public String getTablePath() {
return getSchema() + "." + getSQLTable();
}
@Override
public AbstractSQLConfig setTable(String table) { //Table已经在Parser中校验，所以这里不用防SQL注入
this.table = table;
return this;
}
@Override
public String getGroup() {
return group;
}
public AbstractSQLConfig setGroup(String... keys) {
return setGroup(StringUtil.getString(keys));
}
@Override
public AbstractSQLConfig setGroup(String group) {
this.group = group;
return this;
}
@JSONField(serialize = false)
public String getGroupString() {
group = StringUtil.getTrimedString(group);
if (group.isEmpty()) {
return "";
}
if (isPrepared()) { //不能通过 ? 来代替，因为SQLExecutor statement.setString后 GROUP BY 'userId' 有单引号，只能返回一条数据，必须去掉单引号才行！
String[] keys = StringUtil.split(group);
if (keys != null && keys.length > 0) {
for (int i = 0; i < keys.length; i++) {
if (StringUtil.isName(keys[i]) == false) {
throw new IllegalArgumentException("@group:value 中 value里面用 , 分割的每一项都必须是1个单词！并且不要有空格！");
}
}
}
}
return " GROUP BY " + group;
}
@Override
public String getHaving() {
return having;
}
public AbstractSQLConfig setHaving(String... conditions) {
return setHaving(StringUtil.getString(conditions));
}
@Override
public AbstractSQLConfig setHaving(String having) {
this.having = having;
return this;
}
@JSONField(serialize = false)
public String getHavingString() {
having = StringUtil.getTrimedString(having);
if(having.isEmpty()) {
return "";
}
if (isPrepared()) {
throw new UnsupportedOperationException("字符串 " + having + " 不合法！预编译模式下不允许传 @having:\"condition\" !");
}
return " HAVING " + having;
}
@Override
public String getOrder() {
return order;
}
public AbstractSQLConfig setOrder(String... conditions) {
return setOrder(StringUtil.getString(conditions));
}
@Override
public AbstractSQLConfig setOrder(String order) {
this.order = order;
return this;
}
@JSONField(serialize = false)
public String getOrderString() {
order = StringUtil.getTrimedString(order);
if (order.isEmpty()) {
return "";
}
if (order.contains("+")) {//replace没有包含的replacement会崩溃
order = order.replaceAll("\\+", " ASC ");
}
if (order.contains("-")) {
order = order.replaceAll("-", " DESC ");
}
if (isPrepared()) { //不能通过 ? 来代替，SELECT 'id','name' 返回的就是 id:"id", name:"name"，而不是数据库里的值！
String[] keys = StringUtil.split(order);
if (keys != null && keys.length > 0) {
String origin;
int index;
for (int i = 0; i < keys.length; i++) {
index = keys[i].trim().endsWith(" ASC") ? keys[i].lastIndexOf(" ASC") : -1; //StringUtil.split返回数组中，子项不会有null
if (index < 0) {
index = keys[i].trim().endsWith(" DESC") ? keys[i].lastIndexOf(" DESC") : -1;
}
origin = index < 0 ? keys[i] : keys[i].substring(0, index);
//这里既不对origin trim，也不对 ASC/DESC ignoreCase，希望前端严格传没有任何空格的字符串过来，减少传输数据量，节约服务器性能
if (StringUtil.isName(origin) == false) {
throw new IllegalArgumentException("预编译模式下 @order:value 中 value里面用 , 分割的每一项"
+ " column+ / column- 中 column必须是1个单词！并且不要有多余的空格！");
}
}
}
}
return " ORDER BY " + order;
}
@Override
public String getColumn() {
return column;
}
public AbstractSQLConfig setColumn(String... keys) {
return setColumn(StringUtil.getString(keys));
}
@Override
public AbstractSQLConfig setColumn(String column) {
this.column = column;
return this;
}
@JSONField(serialize = false)
public String getColumnString() throws NotExistException {
switch (getMethod()) {
case HEAD:
case HEADS: //StringUtil.isEmpty(column, true) || column.contains(",") 时SQL.count(column)会return "*"
if (isPrepared() && StringUtil.isEmpty(column, true) == false
&& column.contains(",") == false && StringUtil.isName(column) == false) {
throw new IllegalArgumentException("HEAD请求: @column:value 中 value里面用 , 分割的每一项都必须是1个单词！");
}
return SQL.count(column);
case POST:
if (StringUtil.isEmpty(column, true)) {
throw new NotExistException(TAG + "getColumnString getMethod() = POST"
+ " >> StringUtil.isEmpty(column, true)");
}
if (isPrepared()) { //不能通过 ? 来代替，SELECT 'id','name' 返回的就是 id:"id", name:"name"，而不是数据库里的值！
String[] keys = StringUtil.split(column);
if (keys != null && keys.length > 0) {
for (int i = 0; i < keys.length; i++) {
if (StringUtil.isName(keys[i]) == false) {
throw new IllegalArgumentException("POST请求: 每一个 key:value 中的key都必须是1个单词！");
}
}
}
}
return "(" + column + ")";
default:
column = StringUtil.getString(column);
if (column.isEmpty()) {
return "*";
}
if (isPrepared()) { //不能通过 ? 来代替，SELECT 'id','name' 返回的就是 id:"id", name:"name"，而不是数据库里的值！
String[] keys = StringUtil.split(column);
if (keys != null && keys.length > 0) {
String origin;
String alias;
int index;
for (int i = 0; i < keys.length; i++) {
index = keys[i].indexOf(":"); //StringUtil.split返回数组中，子项不会有null
origin = index < 0 ? keys[i] : keys[i].substring(0, index);
alias = index < 0 ? null : keys[i].substring(index + 1);
if (StringUtil.isName(origin) == false || (alias != null && StringUtil.isName(alias) == false)) {
throw new IllegalArgumentException("GET请求: 预编译模式下 @column:value 中 value里面用 , 分割的每一项"
+ " column:alias 中 column必须是1个单词！如果有alias，则alias也必须为1个单词！并且不要有多余的空格！");
}
}
}
}
return column.contains(":") == false ? column : column.replaceAll(":", " AS ");//不能在这里改，后续还要用到:
}
}
@Override
public String getValues() {
return values;
}
@JSONField(serialize = false)
public String getValuesString() {
return values;
}
public AbstractSQLConfig setValues(Object[][] valuess) {
String s = "";
if (valuess != null && valuess.length > 0) {
Object[] items = new Object[valuess.length];
Object[] vs;
for (int i = 0; i < valuess.length; i++) {
vs = valuess[i];
if (vs == null) {
continue;
}
items[i] = "(";
for (int j = 0; j < vs.length; j++) {
items[i] += ((j <= 0 ? "" : ",") + getValue(vs[j]));
}
items[i] += ")";
}
s = StringUtil.getString(items);
}
return setValues(s);
}
@Override
public AbstractSQLConfig setValues(String values) {
this.values = values;
return this;
}
@Override
public Map<String, Object> getContent() {
return content;
}
@Override
public AbstractSQLConfig setContent(Map<String, Object> content) {
this.content = content;
return this;
}
@Override
public int getCount() {
return count;
}
@Override
public AbstractSQLConfig setCount(int count) {
this.count = count;
return this;
}
@Override
public int getPage() {
return page;
}
@Override
public AbstractSQLConfig setPage(int page) {
this.page = page;
return this;
}
@Override
public int getPosition() {
return position;
}
@Override
public AbstractSQLConfig setPosition(int position) {
this.position = position;
return this;
}
@Override
public int getQuery() {
return query;
}
@Override
public AbstractSQLConfig setQuery(int query) {
this.query = query;
return this;
}
@Override
public int getType() {
return type;
}
@Override
public AbstractSQLConfig setType(int type) {
this.type = type;
return this;
}
@Override
public boolean isTest() {
return test;
}
@Override
public AbstractSQLConfig setTest(boolean test) {
this.test = test;
return this;
}
@Override
public boolean isCacheStatic() {
return cacheStatic;
}
@Override
public AbstractSQLConfig setCacheStatic(boolean cacheStatic) {
this.cacheStatic = cacheStatic;
return this;
}
/**获取初始位置offset
* @return
*/
@JSONField(serialize = false)
public int getOffset() {
return getOffset(getPage(), getCount());
}
/**获取初始位置offset
* @param page
* @param count
* @return
*/
public static int getOffset(int page, int count) {
return page*count;
}
/**获取限制数量
* @return
*/
@JSONField(serialize = false)
public String getLimitString() {
return getLimitString(getPage(), getCount());// + 1);
}
/**获取限制数量
* @param limit
* @return
*/
public static String getLimitString(int page, int count) {
return count <= 0 ? "" : " LIMIT " + getOffset(page, count) + ", " + count;
}
//WHERE <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
@Override
public Map<String, Object> getWhere() {
return where;
}
@Override
public AbstractSQLConfig setWhere(Map<String, Object> where) {
this.where = where;
return this;
}
@NotNull
@Override
public Map<String, List<String>> getCombine() {
List<String> andList = combine == null ? null : combine.get("&");
if (andList == null) {
andList = where == null ? new ArrayList<String>() : new ArrayList<String>(where.keySet());
if (combine == null) {
combine = new HashMap<>();
}
combine.put("&", andList);
}
return combine;
}
@Override
public AbstractSQLConfig setCombine(Map<String, List<String>> combine) {
this.combine = combine;
return this;
}
/**
* noFunctionChar = false
* @param key
* @return
*/
@JSONField(serialize = false)
@Override
public Object getWhere(String key) {
return getWhere(key, false);
}
/**
* @param key
* @param exactMatch
* @return
*/
@JSONField(serialize = false)
@Override
public Object getWhere(String key, boolean exactMatch) {
if (exactMatch) {
return where == null ? null : where.get(key);
}
Set<String> set = key == null || where == null ? null : where.keySet();
if (set != null) {
synchronized (where) {
if (where != null) {
int index;
for (String k : set) {
index = k.indexOf(key);
if (index >= 0 && StringUtil.isName(k.substring(index)) == false) {
return where.get(k);
}
}
}
}
}
return null;
}
@Override
public AbstractSQLConfig putWhere(String key, Object value) {
if (key != null) {
if (where == null) {
where = new LinkedHashMap<String, Object>();
}
where.put(key, value);
combine = getCombine();
List<String> andList = combine == null ? null : combine.get("&");
if (value == null) {
andList.remove(key);
}
else if (andList == null || andList.contains(key) == false) {
int i = 0;
if (andList == null) {
andList = new ArrayList<>();
}
else if (andList.isEmpty() == false) {
if (andList.contains(KEY_ID)) {
i ++;
}
if (andList.contains(KEY_ID_IN)) {
i ++;
}
if (andList.contains(KEY_USER_ID)) {
i ++;
}
if (andList.contains(KEY_USER_ID_IN)) {
i ++;
}
}
andList.add(i, key); //userId的优先级不能比id高 0, key);
}
combine.put("&", andList);
}
return this;
}
/**获取WHERE
* @return
* @throws Exception
*/
@JSONField(serialize = false)
public String getWhereString() throws Exception {
return getWhereString(getMethod(), getWhere(), getCombine(), ! isTest());
}
/**获取WHERE
* @param method
* @param where
* @return
* @throws Exception
*/
public String getWhereString(RequestMethod method, Map<String, Object> where, Map<String, List<String>> combine, boolean verifyName) throws Exception {
Set<Entry<String, List<String>>> combineSet = combine == null ? null : combine.entrySet();
if (combineSet == null || combineSet.isEmpty()) {
Log.w(TAG, "getWhereString combineSet == null || combineSet.isEmpty() >> return \"\";");
return "";
}
List<String> keyList;
String whereString = "";
boolean isCombineFirst = true;
int logic;
boolean isItemFirst;
String c;
String cs;
for (Entry<String, List<String>> ce : combineSet) {
keyList = ce == null ? null : ce.getValue();
if (keyList == null || keyList.isEmpty()) {
continue;
}
if ("|".equals(ce.getKey())) {
logic = Logic.TYPE_OR;
}
else if ("!".equals(ce.getKey())) {
logic = Logic.TYPE_NOT;
}
else {
logic = Logic.TYPE_AND;
}
isItemFirst = true;
cs = "";
for (String key : keyList) {
c = getWhereItem(key, where.get(key), method, verifyName);
if (StringUtil.isEmpty(c, true)) {//避免SQL条件连接错误
continue;
}
cs += (isItemFirst ? "" : (Logic.isAnd(logic) ? AND : OR)) + "(" + c + ")";
isItemFirst = false;
}
whereString += (isCombineFirst ? "" : AND) + (Logic.isNot(logic) ? NOT : "") + " ( " + cs + " ) ";
isCombineFirst = false;
}
String s = whereString.isEmpty() ? "" : " WHERE " + whereString;
if (s.isEmpty() && RequestMethod.isQueryMethod(method) == false) {
throw new UnsupportedOperationException("写操作请求必须带条件！！！");
}
return s;
}
/**
* @param key
* @param value
* @param method
* @param verifyName
* @return
* @throws Exception
*/
private String getWhereItem(String key, Object value
, RequestMethod method, boolean verifyName) throws Exception {
Log.d(TAG, "getWhereItem key = " + key);
//避免筛选到全部 value = key == null ? null : where.get(key);
if (key == null || value == null || key.startsWith("@") || key.endsWith("()")) {//关键字||方法, +或-直接报错
Log.d(TAG, "getWhereItem key == null || value == null"
+ " || key.startsWith(@) || key.endsWith(()) >> continue;");
return null;
}
if (key.endsWith("@")) {//引用
// key = key.substring(0, key.lastIndexOf("@"));
throw new IllegalArgumentException(TAG + ".getWhereItem: 字符 " + key + " 不合法！");
}
int keyType;
if (key.endsWith("$")) {
keyType = 1;
}
else if (key.endsWith("?")) {
keyType = 2;
}
else if (key.endsWith("{}")) {
keyType = 3;
}
else if (key.endsWith("<>")) {
keyType = 4;
}
else { //else绝对不能省，避免再次踩坑！ keyType = 0; 写在for循环外面都没注意！
keyType = 0;
}
key = getRealKey(method, key, false, true, verifyName);
switch (keyType) {
case 1:
return getSearchString(key, value);
case 2:
return getRegExpString(key, value);
case 3:
return getRangeString(key, value);
case 4:
return getContainString(key, value);
default: //TODO MySQL JSON类型的字段对比 key='[]' 会无结果！ key LIKE '[1, 2, 3]' //TODO MySQL , 后面有空格！
return getEqualString(key, value);
}
}
private String getEqualString(String key, Object value) {
return (key + "=" + getValue(value));
}
/**
* 使用prepareStatement预编译，值为 ? ，后续动态set进去
*/
private List<Object> preparedValues = new ArrayList<>();
private Object getValue(@NotNull Object value) {
if (isPrepared()) {
preparedValues.add(value);
return "?";
}
return "'" + value + "'";
}
@Override
public List<Object> getPreparedValueList() {
return preparedValues;
}
//$ search <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
/**search key match value
* @param in
* @return {@link #getSearchString(String, Object[], int)}
* @throws IllegalArgumentException
*/
public String getSearchString(String key, Object value) throws IllegalArgumentException {
if (value == null) {
return "";
}
Logic logic = new Logic(key);
key = logic.getKey();
Log.i(TAG, "getSearchString key = " + key);
JSONArray arr = newJSONArray(value);
if (arr.isEmpty()) {
return "";
}
return getSearchString(key, arr.toArray(), logic.getType());
}
/**search key match values
* @param in
* @return LOGIC [ key LIKE 'values[i]' ]
* @throws IllegalArgumentException
*/
public String getSearchString(String key, Object[] values, int type) throws IllegalArgumentException {
if (values == null || values.length <= 0) {
return "";
}
String condition = "";
for (int i = 0; i < values.length; i++) {
if (values[i] instanceof String == false) {
throw new IllegalArgumentException(key + "$\":value 中value的类型只能为String或String[]！");
}
condition += (i <= 0 ? "" : (Logic.isAnd(type) ? AND : OR)) + getLikeString(key, values[i]);
}
return getCondition(Logic.isNot(type), condition);
}
/**WHERE key LIKE 'value'
* @param key endsWith("!") ? key = key.substring(0, key.length() - 1) + NOT;
* @param value
* @return key LIKE 'value'
*/
public String getLikeString(String key, Object value) {
return key + " LIKE " + getValue(value);
}
//$ search >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//$ search <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
/**search key match RegExps value
* @param in
* @return {@link #getRegExpString(String, Object[], int)}
* @throws IllegalArgumentException
*/
public String getRegExpString(String key, Object value) throws IllegalArgumentException {
if (value == null) {
return "";
}
Logic logic = new Logic(key);
key = logic.getKey();
Log.i(TAG, "getRegExpString key = " + key);
JSONArray arr = newJSONArray(value);
if (arr.isEmpty()) {
return "";
}
return getRegExpString(key, arr.toArray(), logic.getType());
}
/**search key match RegExp values
* @param in
* @return LOGIC [ key REGEXP 'values[i]' ]
* @throws IllegalArgumentException
*/
public String getRegExpString(String key, Object[] values, int type) throws IllegalArgumentException {
if (values == null || values.length <= 0) {
return "";
}
String condition = "";
for (int i = 0; i < values.length; i++) {
if (values[i] instanceof String == false) {
throw new IllegalArgumentException(key + "$\":value 中value的类型只能为String或String[]！");
}
condition += (i <= 0 ? "" : (Logic.isAnd(type) ? AND : OR)) + getRegExpString(key, (String) values[i]);
}
return getCondition(Logic.isNot(type), condition);
}
/**WHERE key REGEXP 'value'
* @param key
* @param value
* @return key REGEXP 'value'
*/
public String getRegExpString(String key, String value) {
return key + " REGEXP " + getValue(value);
}
//$ search >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//{} range <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// * 和 / 不能同时出现，防止 /* */ 段注释！ # 和 -- 不能出现，防止行注释！ ; 不能出现，防止隔断SQL语句！空格不能出现，防止 CRUD,DROP,SHOW TABLES等语句！
private static final Pattern PATTERN_RANGE;
static {
PATTERN_RANGE = Pattern.compile("^[0-9%!=<>,]+$"); // ^[a-zA-Z0-9_*%!=<>(),"]+$ 导致 exists(select*from(Comment)) 通过！
}
/**WHERE key > 'key0' AND key <= 'key1' AND ...
* @param key
* @param range "condition0,condition1..."
* @return key condition0 AND key condition1 AND ...
* @throws Exception
*/
public String getRangeString(String key, Object range) throws Exception {
Log.i(TAG, "getRangeString key = " + key);
if (range == null) {//依赖的对象都没有给出有效值，这个存在无意义。如果是客户端传的，那就能在客户端确定了。
throw new NotExistException(TAG + "getRangeString(" + key + ", " + range
+ ") range == null");
}
Logic logic = new Logic(key);
key = logic.getKey();
Log.i(TAG, "getRangeString key = " + key);
if (range instanceof List) {
if (logic.isOr() || logic.isNot()) {
return key + getInString(key, ((List<?>) range).toArray(), logic.isNot());
}
throw new IllegalArgumentException(key + "{}\":[] 中key末尾的逻辑运算符只能用'|','!'中的一种 ！");
}
if (range instanceof String) {//非Number类型需要客户端拼接成 < 'value0', >= 'value1'这种
if (isPrepared() && PATTERN_RANGE.matcher((String) range).matches() == false) {
throw new UnsupportedOperationException("字符串 " + range + " 不合法！预编译模式下 key{}:\"condition\" 中 condition 必须符合正则表达式 ^[0-9%!=<>,]+$ ！不允许空格！");
}
String[] conditions = StringUtil.split((String) range);
String condition = "";
if (conditions != null) {
int index;
for (int i = 0; i < conditions.length; i++) {//对函数条件length(key)<=5这种不再在开头加key
index = conditions[i] == null ? -1 : conditions[i].indexOf("(");
condition += ((i <= 0 ? "" : (logic.isAnd() ? AND : OR))//连接方式
+ (index >= 0 && index < conditions[i].indexOf(")") ? "" : key + " ")//函数和非函数条件
+ conditions[i]);//单个条件
}
}
if (condition.isEmpty()) {
return "";
}
return getCondition(logic.isNot(), condition);
}
throw new IllegalArgumentException(key + "{}:range 类型为" + range.getClass().getSimpleName()
+ "！range只能是 用','分隔条件的字符串 或者 可取选项JSONArray！");
}
/**WHERE key IN ('key0', 'key1', ... )
* @param in
* @return IN ('key0', 'key1', ... )
* @throws NotExistException
*/
public String getInString(String key, Object[] in, boolean not) throws NotExistException {
String condition = "";
if (in != null) {//返回 "" 会导致 id:[] 空值时效果和没有筛选id一样！
for (int i = 0; i < in.length; i++) {
condition += ((i > 0 ? "," : "") + getValue(in[i]));
}
}
if (condition.isEmpty()) {//条件如果存在必须执行，不能忽略。条件为空会导致出错，又很难保证条件不为空(@:条件)，所以还是这样好
throw new NotExistException(TAG + ".getInString(" + key + ", [], " + not
+ ") >> condition.isEmpty() >> IN()");
}
return (not ? NOT : "") + " IN (" + condition + ")";
}
//{} range >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//<> contain <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
/**WHERE key contains value
* @param key
* @param value
* @return {@link #getContainString(String, Object[], int)}
* @throws NotExistException
*/
public String getContainString(String key, Object value) throws NotExistException {
if (value == null) {
return "";
}
Logic logic = new Logic(key);
key = logic.getKey();
Log.i(TAG, "getRangeString key = " + key);
return getContainString(key, newJSONArray(value).toArray(), logic.getType());