添加like，not like查询

Author: jiangnan

CHANGELOG

@@ -13,3 +13,5 @@
 2019-4-11: 添加Function Score
 
 2019-4-24: 将elasticsearch-sql添加为elasticsearch插件
+
+2019-4-28: 添加like not like 查询

README.md

@@ -65,6 +65,7 @@ CHANGELOG
 2019-4-8: 添加高亮显示<br/>
 2019-4-11: 添加Function Score<br/>
 2019-4-24: 将elasticsearch-sql添加为elasticsearch插件
+2019-4-28: 添加like not like 查询
 
 [CHANGELOG](https://github.com/iamazy/elasticsearch-sql/edit/master/CHANGELOG)
 
@@ -189,9 +190,10 @@ public Map<String, Object> get(String cluster,String index,String type, String i
 - [x] ES Highlighter
 - [x] ES Boosting
 - [x] ES Function Score
+- [x] SQL Like
 
 #### 未来将要添加的功能
-- [x] ES Highlighter (已添加)
+- [x] ES Highlighter
 - [ ] elasticsearch-sql[NLPChina]组件中我未添加的功能!!!
 
 <font size="10">☀️</font>未来的想法是将功能完善的跟NLPChina团队一样多嘻嘻

src/main/java/io/github/iamazy/elasticsearch/dsl/sql/enums/SqlConditionOperator.java

@@ -16,5 +16,7 @@ public enum SqlConditionOperator {
     IsNotNull,
     In,
     NotIn,
-    BetweenAnd
+    BetweenAnd,
+    Like,
+    NotLike
 }

src/main/java/io/github/iamazy/elasticsearch/dsl/sql/parser/query/exact/BinaryQueryParser.java

@@ -1,15 +1,19 @@
 package io.github.iamazy.elasticsearch.dsl.sql.parser.query.exact;
 
+import com.alibaba.druid.sql.ast.SQLExpr;
 import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
 import com.alibaba.druid.sql.ast.expr.SQLBinaryOperator;
+import com.alibaba.druid.sql.ast.expr.SQLCharExpr;
 import com.alibaba.druid.sql.ast.expr.SQLNullExpr;
 import io.github.iamazy.elasticsearch.dsl.sql.enums.SqlConditionOperator;
 import io.github.iamazy.elasticsearch.dsl.sql.exception.ElasticSql2DslException;
 import io.github.iamazy.elasticsearch.dsl.sql.helper.ElasticSqlArgConverter;
 import io.github.iamazy.elasticsearch.dsl.sql.model.AtomicQuery;
+import io.github.iamazy.elasticsearch.dsl.sql.model.SqlCondition;
 import org.elasticsearch.index.query.ExistsQueryBuilder;
 import org.elasticsearch.index.query.QueryBuilder;
 import org.elasticsearch.index.query.QueryBuilders;
+import org.elasticsearch.index.query.RegexpQueryBuilder;
 
 
 public class BinaryQueryParser extends AbstractExactQueryParser {
@@ -32,6 +36,8 @@ public AtomicQuery parseBinaryQuery(SQLBinaryOpExpr binQueryExpr, String queryAs
             });
         }
 
+
+
         //GT GTE LT LTE
         if (SQLBinaryOperator.GreaterThan == binaryOperator || SQLBinaryOperator.GreaterThanOrEqual == binaryOperator
                 || SQLBinaryOperator.LessThan == binaryOperator || SQLBinaryOperator.LessThanOrEqual == binaryOperator) {
@@ -84,6 +90,31 @@ else if (SqlConditionOperator.LessThanOrEqual == operator12) {
             });
         }
 
+        if(SQLBinaryOperator.Like == binaryOperator || SQLBinaryOperator.NotLike == binaryOperator){
+            if(binQueryExpr.getRight() instanceof SQLCharExpr) {
+                SQLCharExpr rightExpr = (SQLCharExpr) binQueryExpr.getRight();
+                SQLExpr leftExpr = binQueryExpr.getLeft();
+                SqlConditionOperator operator=SQLBinaryOperator.Like == binaryOperator?SqlConditionOperator.Like:SqlConditionOperator.NotLike;
+                return parseCondition(binQueryExpr.getLeft(),operator,null,queryAs,((queryFieldName, operator1, rightParamValues) -> {
+                    String rightText=rightExpr.getText();
+                    if(rightExpr.getText().contains("%")){
+                        rightText=rightText.replace("%","*");
+                    }
+                    if(rightExpr.getText().contains("_")){
+                        rightText=rightText.replace("_","?");
+                    }
+                    RegexpQueryBuilder regexpQueryBuilder = QueryBuilders.regexpQuery(leftExpr.toString(), rightText);
+                    if(operator1.equals(SqlConditionOperator.Like)) {
+                        return regexpQueryBuilder;
+                    }else{
+                        return QueryBuilders.boolQuery().mustNot(regexpQueryBuilder);
+                    }
+                }));
+            }else{
+                throw new ElasticSql2DslException("[syntax error] Like/NotLike expr right part should be a char expr");
+            }
+        }
+
         throw new ElasticSql2DslException(String.format("[syntax error] Can not support binary query type[%s]", binQueryExpr.toString()));
     }
 }