refactor DropParser

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/mysql/MySQLDropParser.java

@@ -34,12 +34,12 @@ public final class MySQLDropParser extends AbstractDropParser {
     }
     
     @Override
-    protected Keyword[] getSkipWordsBetweenDropAndTable() {
+    protected Keyword[] getSkipKeywordsBetweenDropAndTable() {
         return new Keyword[] {DefaultKeyword.TEMPORARY};
     }
     
     @Override
-    protected Keyword[] getSkipWordsBetweenKeywordAndTableName() {
+    protected Keyword[] getSkipKeywordsBetweenDropTableAndTableName() {
         return new Keyword[] {DefaultKeyword.IF, DefaultKeyword.EXISTS};
     }
 }

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/oracle/OracleDropParser.java

@@ -33,7 +33,7 @@ public final class OracleDropParser extends AbstractDropParser {
     }
     
     @Override
-    protected Keyword[] getSkipWordsBetweenKeywordAndTableName() {
+    protected Keyword[] getSkipKeywordsBetweenDropTableAndTableName() {
         return new Keyword[] {};
     }
 }

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/postgresql/PostgreSQLDropParser.java

@@ -34,7 +34,7 @@ public final class PostgreSQLDropParser extends AbstractDropParser {
     }
     
     @Override
-    protected Keyword[] getSkipWordsBetweenKeywordAndTableName() {
+    protected Keyword[] getSkipKeywordsBetweenDropTableAndTableName() {
         return new Keyword[] {DefaultKeyword.IF, DefaultKeyword.EXISTS};
     }
 }

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/sqlserver/SQLServerDropParser.java

@@ -34,7 +34,7 @@ public final class SQLServerDropParser extends AbstractDropParser {
     }
     
     @Override
-    protected Keyword[] getSkipWordsBetweenKeywordAndTableName() {
+    protected Keyword[] getSkipKeywordsBetweenDropTableAndTableName() {
         return new Keyword[] {DefaultKeyword.IF, DefaultKeyword.EXISTS};
     }
 }

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/statement/ddl/drop/AbstractDropParser.java

@@ -48,18 +48,18 @@ public abstract class AbstractDropParser implements SQLStatementParser {
     @Override
     public DDLStatement parse() {
         sqlParser.getLexer().nextToken();
-        getSqlParser().skipAll(getSkipWordsBetweenDropAndTable());
+        getSqlParser().skipAll(getSkipKeywordsBetweenDropAndTable());
         if (!sqlParser.skipIfEqual(DefaultKeyword.TABLE)) {
             throw new SQLParsingUnsupportedException(sqlParser.getLexer().getCurrentToken().getType());
         }
-        getSqlParser().skipAll(getSkipWordsBetweenKeywordAndTableName());
+        getSqlParser().skipAll(getSkipKeywordsBetweenDropTableAndTableName());
         sqlParser.parseSingleTable(dropStatement);
         return dropStatement;
     }
     
-    protected Keyword[] getSkipWordsBetweenDropAndTable() {
+    protected Keyword[] getSkipKeywordsBetweenDropAndTable() {
         return new Keyword[0];
     }
     
-    protected abstract Keyword[] getSkipWordsBetweenKeywordAndTableName();
+    protected abstract Keyword[] getSkipKeywordsBetweenDropTableAndTableName();
 }