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Code Issues Releases Wiki Activity

improved sql parser.

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This commit is contained in:
wenshao
2017-09-13 21:24:24 +08:00
parent f208f42e01
commit 8226eae1de
9 changed files with 102 additions and 82 deletions
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src/main/java/com/alibaba/druid/sql/SQLTransformUtils.java
+31 -28
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@@ -416,16 +416,16 @@ public class SQLTransformUtils {
len = ((SQLIntegerExpr) arg0).getNumber().intValue();
}
}
dataType = new SQLDataTypeImpl("varchar", len);
dataType = new SQLDataTypeImpl(SQLDataType.Constants.VARCHAR, len);
} else if (nameHash == FnvHash.Constants.ROWID) {
dataType = new SQLDataTypeImpl("char", 10);
dataType = new SQLDataTypeImpl(SQLDataType.Constants.CHAR, 10);
} else if (nameHash == FnvHash.Constants.BOOLEAN) {
dataType = new SQLDataTypeImpl("tinyint");
} else if (nameHash == FnvHash.Constants.BOOLEAN || nameHash == FnvHash.Constants.SMALLINT) {
dataType = new SQLDataTypeImpl(SQLDataType.Constants.SMALLINT);
} else if (nameHash == FnvHash.Constants.INTEGER
|| nameHash == FnvHash.Constants.INT) {
dataType = new SQLDataTypeImpl("decimal", 38);
dataType = new SQLDataTypeImpl(SQLDataType.Constants.DECIMAL, 38);
} else if (nameHash == FnvHash.Constants.BINARY_FLOAT) {
dataType = new SQLDataTypeImpl("real");
@@ -439,7 +439,7 @@ public class SQLTransformUtils {
} else if (nameHash == FnvHash.Constants.NUMBER) {
if (argumentns.size() == 0) {
dataType = new SQLDataTypeImpl("decimal", 38);
dataType = new SQLDataTypeImpl(SQLDataType.Constants.DECIMAL, 38);
} else {
SQLExpr arg0 = argumentns.get(0);
@@ -468,23 +468,23 @@ public class SQLTransformUtils {
if (scale == 0) {
if (precision < 5) {
dataType = new SQLDataTypeImpl("smallint");
dataType = new SQLDataTypeImpl(SQLDataType.Constants.SMALLINT);
} else if (precision < 9) {
dataType = new SQLDataTypeImpl("int");
dataType = new SQLDataTypeImpl(SQLDataType.Constants.INT);
} else if (precision <= 20) {
dataType = new SQLDataTypeImpl("bigint");
dataType = new SQLDataTypeImpl(SQLDataType.Constants.BIGINT);
} else {
dataType = new SQLDataTypeImpl("decimal", precision);
dataType = new SQLDataTypeImpl(SQLDataType.Constants.DECIMAL, precision);
}
} else {
dataType = new SQLDataTypeImpl("decimal", precision, scale);
dataType = new SQLDataTypeImpl(SQLDataType.Constants.DECIMAL, precision, scale);
}
}
} else if (nameHash == FnvHash.Constants.DEC
|| nameHash == FnvHash.Constants.DECIMAL) {
dataType = x.clone();
dataType.setName("decimal");
dataType.setName(SQLDataType.Constants.DECIMAL);
int precision = 0;
if (argumentns.size() > 0) {
@@ -509,9 +509,9 @@ public class SQLTransformUtils {
} else {
throw new UnsupportedOperationException(SQLUtils.toOracleString(x));
}
dataType = new SQLCharacterDataType("char", len);
dataType = new SQLCharacterDataType(SQLDataType.Constants.CHAR, len);
} else if (argumentns.size() == 0) {
dataType = new SQLCharacterDataType("char");
dataType = new SQLCharacterDataType(SQLDataType.Constants.CHAR);
} else {
throw new UnsupportedOperationException(SQLUtils.toOracleString(x));
}
@@ -528,17 +528,19 @@ public class SQLTransformUtils {
if (len <= 2000) {
dataType = x;
dataType.setName(SQLDataType.Constants.CHAR);
} else {
dataType = new SQLCharacterDataType("text");
dataType = new SQLCharacterDataType(SQLDataType.Constants.TEXT);
}
} else if (argumentns.size() == 0) {
dataType = new SQLCharacterDataType("char");
dataType = new SQLCharacterDataType(SQLDataType.Constants.CHAR);
} else {
throw new UnsupportedOperationException(SQLUtils.toOracleString(x));
}
} else if (nameHash == FnvHash.Constants.NCHAR) {
// no changed
dataType = x;
dataType.setName(SQLDataType.Constants.NCHAR);
} else if (nameHash == FnvHash.Constants.VARCHAR
|| nameHash == FnvHash.Constants.VARCHAR2) {
if (argumentns.size() > 0) {
@@ -551,15 +553,16 @@ public class SQLTransformUtils {
}
if (len <= 4000) {
dataType = new SQLCharacterDataType("varchar", len);
dataType = new SQLCharacterDataType(SQLDataType.Constants.VARCHAR, len);
} else {
dataType = new SQLCharacterDataType("text");
dataType = new SQLCharacterDataType(SQLDataType.Constants.TEXT);
}
} else {
dataType = new SQLCharacterDataType("varchar");
dataType = new SQLCharacterDataType(SQLDataType.Constants.VARCHAR);
}
} else if (nameHash == FnvHash.Constants.NVARCHAR2
} else if (nameHash == FnvHash.Constants.NVARCHAR
|| nameHash == FnvHash.Constants.NVARCHAR2
|| nameHash == FnvHash.Constants.NCHAR_VARYING) {
if (argumentns.size() > 0) {
int len;
@@ -569,13 +572,13 @@ public class SQLTransformUtils {
} else {
throw new UnsupportedOperationException(SQLUtils.toOracleString(x));
}
dataType = new SQLCharacterDataType("varchar", len);
dataType = new SQLCharacterDataType(SQLDataType.Constants.VARCHAR, len);
} else {
dataType = new SQLCharacterDataType("varchar");
dataType = new SQLCharacterDataType(SQLDataType.Constants.VARCHAR);
}
} else if (nameHash == FnvHash.Constants.BFILE) {
dataType = new SQLCharacterDataType("varchar", 255);
dataType = new SQLCharacterDataType(SQLDataType.Constants.VARCHAR, 255);
} else if (nameHash == FnvHash.Constants.DATE
|| nameHash == FnvHash.Constants.DATETIME
@@ -591,24 +594,24 @@ public class SQLTransformUtils {
}
if (len > 0) {
dataType = new SQLDataTypeImpl("timestamp", len);
dataType = new SQLDataTypeImpl(SQLDataType.Constants.TIMESTAMP, len);
} else {
dataType = new SQLDataTypeImpl("timestamp");
dataType = new SQLDataTypeImpl(SQLDataType.Constants.TIMESTAMP);
}
} else if (nameHash == FnvHash.Constants.BLOB
|| nameHash == FnvHash.Constants.LONG_RAW
|| nameHash == FnvHash.Constants.RAW) {
argumentns.clear();
dataType = new SQLDataTypeImpl("bytea");
dataType = new SQLDataTypeImpl(SQLDataType.Constants.BYTEA);
} else if (nameHash == FnvHash.Constants.CLOB
|| nameHash == FnvHash.Constants.NCLOB
|| nameHash == FnvHash.Constants.LONG) {
argumentns.clear();
dataType = new SQLCharacterDataType("text");
dataType = new SQLCharacterDataType(SQLDataType.Constants.TEXT);
} else if (nameHash == FnvHash.Constants.XMLTYPE) {
dataType = new SQLDataTypeImpl("xml");
dataType = new SQLDataTypeImpl(SQLDataType.Constants.XML);
} else {
dataType = x;
}