added SQL_CACHE implementation and changed

Author: wumpz

src/main/java/net/sf/jsqlparser/parser/feature/Feature.java

@@ -699,7 +699,7 @@ public enum Feature {
     // MYSQL
 
     mySqlHintStraightJoin,
-    mysqlSqlNoCache,
+    mysqlSqlCacheFlag,
     mysqlCalcFoundRows,
 
     // SQLSERVER

src/main/java/net/sf/jsqlparser/statement/select/MySqlSqlCacheFlags.java

@@ -0,0 +1,18 @@
+/*-
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2022 JSQLParser
+ * %%
+ * Dual licensed under GNU LGPL 2.1 or Apache License 2.0
+ * #L%
+ */
+package net.sf.jsqlparser.statement.select;
+
+/**
+ *
+ * @author tw
+ */
+public enum MySqlSqlCacheFlags {
+     SQL_CACHE, SQL_NO_CACHE
+}

src/main/java/net/sf/jsqlparser/statement/select/PlainSelect.java

@@ -49,7 +49,7 @@ public class PlainSelect extends ASTNodeAccessImpl implements SelectBody {
     private boolean useBrackets = false;
     private Wait wait;
     private boolean mySqlSqlCalcFoundRows = false;
-    private boolean sqlNoCacheFlag = false;
+    private MySqlSqlCacheFlags mySqlCacheFlag = null;
     private String forXmlPath;
     private KSQLWindow ksqlWindow = null;
     private boolean noWait = false;
@@ -361,8 +361,8 @@ public String toString() {
         if (top != null) {
             sql.append(top).append(" ");
         }
-        if (sqlNoCacheFlag) {
-            sql.append("SQL_NO_CACHE").append(" ");
+        if (mySqlCacheFlag != null) {
+            sql.append(mySqlCacheFlag.name()).append(" ");
         }
         if (mySqlSqlCalcFoundRows) {
             sql.append("SQL_CALC_FOUND_ROWS").append(" ");
@@ -544,25 +544,25 @@ public PlainSelect withMySqlSqlCalcFoundRows(boolean mySqlCalcFoundRows) {
         return this;
     }
 
-    public PlainSelect withMySqlSqlNoCache(boolean sqlNoCacheFlagSet) {
-        this.setMySqlSqlNoCache(sqlNoCacheFlagSet);
+    public PlainSelect withMySqlSqlNoCache(MySqlSqlCacheFlags mySqlCacheFlag) {
+        this.setMySqlSqlCacheFlag(mySqlCacheFlag);
         return this;
     }
 
     public void setMySqlSqlCalcFoundRows(boolean mySqlCalcFoundRows) {
         this.mySqlSqlCalcFoundRows = mySqlCalcFoundRows;
     }
 
-    public void setMySqlSqlNoCache(boolean sqlNoCacheFlagSet) {
-        this.sqlNoCacheFlag = sqlNoCacheFlagSet;
+    public void setMySqlSqlCacheFlag(MySqlSqlCacheFlags sqlCacheFlag) {
+        this.mySqlCacheFlag = sqlCacheFlag;
     }
 
     public boolean getMySqlSqlCalcFoundRows() {
         return this.mySqlSqlCalcFoundRows;
     }
 
-    public boolean getMySqlSqlNoCache() {
-        return this.sqlNoCacheFlag;
+    public MySqlSqlCacheFlags getMySqlSqlCacheFlag() {
+        return this.mySqlCacheFlag;
     }
 
     public void setNoWait(boolean noWait) {

src/main/java/net/sf/jsqlparser/util/deparser/SelectDeParser.java

@@ -122,8 +122,8 @@ public void visit(PlainSelect plainSelect) {
             buffer.append(top).append(" ");
         }
 
-        if (plainSelect.getMySqlSqlNoCache()) {
-            buffer.append("SQL_NO_CACHE").append(" ");
+        if (plainSelect.getMySqlSqlCacheFlag() != null) {
+            buffer.append(plainSelect.getMySqlSqlCacheFlag().name()).append(" ");
         }
 
         if (plainSelect.getMySqlSqlCalcFoundRows()) {

src/main/java/net/sf/jsqlparser/util/validation/feature/MariaDbVersion.java

@@ -138,7 +138,8 @@ public enum MariaDbVersion implements Version {
                     Feature.commit,
                     // https://mariadb.com/kb/en/optimizer-hints/
                     Feature.mySqlHintStraightJoin,
-                    Feature.mysqlCalcFoundRows, Feature.mysqlSqlNoCache)),
+                    Feature.mysqlCalcFoundRows, 
+                    Feature.mysqlSqlCacheFlag)),
 
     ORACLE_MODE("oracle_mode", V10_5_4.copy().add(Feature.selectUnique).getFeatures());
 

src/main/java/net/sf/jsqlparser/util/validation/feature/MySqlVersion.java

@@ -121,7 +121,7 @@ public enum MySqlVersion implements Version {
                     Feature.commit,
                     //
                     Feature.mySqlHintStraightJoin,
-                    Feature.mysqlSqlNoCache,
+                    Feature.mysqlSqlCacheFlag,
                     Feature.mysqlCalcFoundRows));
 
     private Set<Feature> features;

src/main/java/net/sf/jsqlparser/util/validation/validator/SelectValidator.java

@@ -52,7 +52,7 @@
  * @author gitmotte
  */
 public class SelectValidator extends AbstractValidator<SelectItem>
-implements SelectVisitor, SelectItemVisitor, FromItemVisitor, PivotVisitor {
+        implements SelectVisitor, SelectItemVisitor, FromItemVisitor, PivotVisitor {
 
     @Override
     public void visit(PlainSelect plainSelect) {
@@ -74,7 +74,7 @@ public void visit(PlainSelect plainSelect) {
             }
 
             validateOptionalFeature(c, plainSelect.getTop(), Feature.top);
-            validateFeature(c, plainSelect.getMySqlSqlNoCache(), Feature.mysqlSqlNoCache);
+            validateFeature(c, plainSelect.getMySqlSqlCacheFlag() != null, Feature.mysqlSqlCacheFlag);
             validateFeature(c, plainSelect.getMySqlSqlCalcFoundRows(), Feature.mysqlCalcFoundRows);
             validateOptionalFeature(c, plainSelect.getIntoTables(), Feature.selectInto);
             validateOptionalFeature(c, plainSelect.getKsqlWindow(), Feature.kSqlWindow);
@@ -243,7 +243,7 @@ public void validateOptionalJoin(Join join) {
         }
 
         validateOptionalFromItem(join.getRightItem());
-        for (Expression onExpression: join.getOnExpressions()) {
+        for (Expression onExpression : join.getOnExpressions()) {
             validateOptionalExpression(onExpression);
         }
         validateOptionalExpressions(join.getUsingColumns());
@@ -331,6 +331,4 @@ public void validate(SelectItem statement) {
         statement.accept(this);
     }
 
-
-
 }

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -404,6 +404,7 @@ TOKEN: /* SQL Keywords. prefixed with K_ to avoid name clashes */
 |   <K_USER:"USER">
 |   <K_SQL_CALC_FOUND_ROWS: "SQL_CALC_FOUND_ROWS">
 |   <K_SQL_NO_CACHE: "SQL_NO_CACHE">
+|   <K_SQL_CACHE: "SQL_CACHE">
 |   <K_USING:"USING">
 |   <K_SIGNED:"SIGNED">
 |   <K_STRING_FUNCTION_NAME: ("SUBSTR" | "SUBSTRING" | "TRIM" | "POSITION" | "OVERLAY")>
@@ -1849,7 +1850,8 @@ PlainSelect PlainSelect() #PlainSelect:
             )
         |
             (
-                <K_SQL_NO_CACHE> { plainSelect.setMySqlSqlNoCache(true); }
+                <K_SQL_NO_CACHE> { plainSelect.setMySqlSqlCacheFlag(MySqlSqlCacheFlags.SQL_NO_CACHE); }
+                | <K_SQL_CACHE> { plainSelect.setMySqlSqlCacheFlag(MySqlSqlCacheFlags.SQL_CACHE); }
             )
         )
     ]

src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java

@@ -2809,6 +2809,12 @@ public void testSqlNoCache() throws JSQLParserException {
         String stmt = "SELECT SQL_NO_CACHE sales.date FROM sales";
         assertSqlCanBeParsedAndDeparsed(stmt);
     }
+    
+    @Test
+    public void testSqlCache() throws JSQLParserException {
+        String stmt = "SELECT SQL_CACHE sales.date FROM sales";
+        assertSqlCanBeParsedAndDeparsed(stmt);
+    }
 
     public void testSelectInto1() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("SELECT * INTO user_copy FROM user");