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refactor sql parser

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This commit is contained in:
wenshao
2013-08-04 23:25:41 +08:00
parent e6f3f85b51
commit 17707f5440
19 changed files with 174 additions and 335 deletions
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src/main/java/com/alibaba/druid/sql/parser/SQLStatementParser.java
+37 -3
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@@ -25,6 +25,7 @@ import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
import com.alibaba.druid.sql.ast.expr.SQLListExpr;
import com.alibaba.druid.sql.ast.expr.SQLQueryExpr;
import com.alibaba.druid.sql.ast.statement.SQLAlterTableAddColumn;
import com.alibaba.druid.sql.ast.statement.SQLAlterTableAddIndex;
import com.alibaba.druid.sql.ast.statement.SQLAlterTableAddPrimaryKey;
import com.alibaba.druid.sql.ast.statement.SQLAlterTableAlterColumn;
import com.alibaba.druid.sql.ast.statement.SQLAlterTableDisableConstraint;
@@ -1011,9 +1012,9 @@ public class SQLStatementParser extends SQLParser {
SQLCreateTableParser createTableParser = getSQLCreateTableParser();
return createTableParser.parseCrateTable(false);
} else if (token == Token.INDEX //
|| token == Token.UNIQUE //
|| identifierEquals("NONCLUSTERED") // sql server
) {
|| token == Token.UNIQUE //
|| identifierEquals("NONCLUSTERED") // sql server
) {
return parseCreateIndex(false);
} else if (lexer.token() == Token.SEQUENCE) {
return parseCreateSequence(false);
@@ -1304,4 +1305,37 @@ public class SQLStatementParser extends SQLParser {
return explain;
}
protected SQLAlterTableAddIndex parseAlterTableAddIndex() {
SQLAlterTableAddIndex item = new SQLAlterTableAddIndex();
if (lexer.token() == Token.UNIQUE) {
item.setUnique(true);
lexer.nextToken();
if (lexer.token() == Token.INDEX) {
lexer.nextToken();
}
} else {
accept(Token.INDEX);
}
if (lexer.token() == Token.LPAREN) {
lexer.nextToken();
} else {
item.setName(this.exprParser.name());
accept(Token.LPAREN);
}
for (;;) {
SQLSelectOrderByItem column = this.exprParser.parseSelectOrderByItem();
item.getItems().add(column);
if (lexer.token() == Token.COMMA) {
lexer.nextToken();
continue;
}
break;
}
accept(Token.RPAREN);
return item;
}
}