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Code Issues Releases Wiki Activity

improve Oracle SQL Parser, support syntax : varchar2(20 char)

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This commit is contained in:
wenshao
2012-12-29 15:27:38 +08:00
parent 4901e6af96
commit a26df79fac
4 changed files with 155 additions and 9 deletions
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src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
+43 -1
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@@ -35,6 +35,7 @@ import com.alibaba.druid.sql.ast.expr.SQLPropertyExpr;
import com.alibaba.druid.sql.ast.expr.SQLUnaryExpr;
import com.alibaba.druid.sql.ast.expr.SQLUnaryOperator;
import com.alibaba.druid.sql.ast.expr.SQLVariantRefExpr;
import com.alibaba.druid.sql.ast.statement.SQLCharactorDataType;
import com.alibaba.druid.sql.ast.statement.SQLColumnDefinition;
import com.alibaba.druid.sql.dialect.oracle.ast.OracleOrderBy;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleAggregateExpr;
@@ -66,6 +67,14 @@ import com.alibaba.druid.sql.parser.SQLExprParser;
import com.alibaba.druid.sql.parser.Token;
public class OracleExprParser extends SQLExprParser {
public boolean allowStringAdditive = false;
/**
@@ -91,6 +100,17 @@ public class OracleExprParser extends SQLExprParser {
this.lexer.nextToken();
}
protected boolean isCharType(String dataTypeName) {
return "varchar2".equalsIgnoreCase(dataTypeName) //
|| "nvarchar2".equalsIgnoreCase(dataTypeName) //
|| "char".equalsIgnoreCase(dataTypeName) //
|| "varchar".equalsIgnoreCase(dataTypeName) //
|| "nchar".equalsIgnoreCase(dataTypeName) //
|| "nvarchar".equalsIgnoreCase(dataTypeName) //
//
;
}
public SQLDataType parseDataType() {
if (lexer.token() == Token.DEFAULT || lexer.token() == Token.NOT || lexer.token() == Token.NULL) {
@@ -100,6 +120,28 @@ public class OracleExprParser extends SQLExprParser {
SQLName typeExpr = name();
String typeName = typeExpr.toString();
if (isCharType(typeName)) {
SQLCharactorDataType charType = new SQLCharactorDataType(typeName);
if (lexer.token() == Token.LPAREN) {
lexer.nextToken();
charType.getArguments().add(this.expr());
if (identifierEquals("CHAR")) {
lexer.nextToken();
charType.setCharType(SQLCharactorDataType.CHAR_TYPE_CHAR);
} else if (identifierEquals("BYTE")) {
lexer.nextToken();
charType.setCharType(SQLCharactorDataType.CHAR_TYPE_BYTE);
}
accept(Token.RPAREN);
}
return parseCharTypeRest(charType);
}
if (lexer.token() == Token.PERCENT) {
lexer.nextToken();
if (identifierEquals("TYPE")) {
@@ -113,7 +155,7 @@ public class OracleExprParser extends SQLExprParser {
}
}
SQLDataType dataType = new SQLDataTypeImpl(typeName);
SQLDataType dataType = new SQLDataTypeImpl(typeName);
return parseDataTypeRest(dataType);
}