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h2database
提交 c264653e authored 作者: Thomas Mueller's avatar Thomas Mueller
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New system property h2.identifiersToUpper.

上级 45234fea
隐藏空白字符变更
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正在显示 包含 85 行增加 和 37 行删除
h2/src/docsrc/html/changelog.html
浏览文件 @ c264653e
......@@ -18,7 +18,8 @@ Change Log
<h1>Change Log</h1>
<h2>Next Version (unreleased)</h2>
<ul><li>Slightly improved performance if the table is already locked.
<ul><li>New system property h2.identifiersToUpper. If set to false, identifiers in SQL statements are case sensitive.
</li><li>Slightly improved performance if the table is already locked.
</li><li>CompressLZF: faster decompression.
</li><li>PgServer: the wrong size was sent for VARCHAR data. Thanks again to Sergi Vladykin for the patch.
</li></ul>
......
h2/src/main/org/h2/command/Parser.java
浏览文件 @ c264653e
......@@ -188,6 +188,7 @@ public class Parser {
private boolean rightsChecked;
private boolean recompileAlways;
private ObjectArray<Parameter> indexedParameterList;
private boolean identifiersToUpper = SysProperties.IDENTIFIERS_TO_UPPER;
public Parser(Session session) {
database = session.getDatabase();
......@@ -303,6 +304,7 @@ public class Parser {
case '(':
c = parseSelect();
break;
case 'a':
case 'A':
if (readIf("ALTER")) {
c = parseAlter();
......@@ -310,6 +312,7 @@ public class Parser {
c = parseAnalyze();
}
break;
case 'b':
case 'B':
if (readIf("BACKUP")) {
c = parseBackup();
......@@ -317,6 +320,7 @@ public class Parser {
c = parseBegin();
}
break;
case 'c':
case 'C':
if (readIf("COMMIT")) {
c = parseCommit();
......@@ -330,6 +334,7 @@ public class Parser {
c = parseComment();
}
break;
case 'd':
case 'D':
if (readIf("DELETE")) {
c = parseDelete();
......@@ -342,6 +347,7 @@ public class Parser {
c = parseDeallocate();
}
break;
case 'e':
case 'E':
if (readIf("EXPLAIN")) {
c = parseExplain();
......@@ -349,36 +355,43 @@ public class Parser {
c = parseExecute();
}
break;
case 'f':
case 'F':
if (isToken("FROM")) {
c = parseSelect();
}
break;
case 'g':
case 'G':
if (readIf("GRANT")) {
c = parseGrantRevoke(GrantRevoke.GRANT);
}
break;
case 'h':
case 'H':
if (readIf("HELP")) {
c = parseHelp();
}
break;
case 'i':
case 'I':
if (readIf("INSERT")) {
c = parseInsert();
}
break;
case 'm':
case 'M':
if (readIf("MERGE")) {
c = parseMerge();
}
break;
case 'p':
case 'P':
if (readIf("PREPARE")) {
c = parsePrepare();
}
break;
case 'r':
case 'R':
if (readIf("ROLLBACK")) {
c = parseRollback();
......@@ -390,6 +403,7 @@ public class Parser {
c = parseReleaseSavepoint();
}
break;
case 's':
case 'S':
if (isToken("SELECT")) {
c = parseSelect();
......@@ -405,21 +419,25 @@ public class Parser {
c = parseShow();
}
break;
case 't':
case 'T':
if (readIf("TRUNCATE")) {
c = parseTruncate();
}
break;
case 'u':
case 'U':
if (readIf("UPDATE")) {
c = parseUpdate();
}
break;
case 'v':
case 'V':
if (readIf("VALUES")) {
c = parserCall();
}
break;
case 'w':
case 'W':
if (readIf("WITH")) {
c = parserWith();
......@@ -588,7 +606,7 @@ public class Parser {
}
Schema schema = database.findSchema(schemaName);
if (schema == null) {
if ("SESSION".equals(schemaName)) {
if (equalsToken("SESSION", schemaName)) {
// for local temporary tables
schema = database.getSchema(session.getCurrentSchemaName());
} else {
......@@ -613,15 +631,15 @@ public class Parser {
schema = tableAlias;
tableAlias = columnName;
columnName = readColumnIdentifier();
if (!catalogName.equals(database.getShortName())) {
if (!equalsToken(catalogName, database.getShortName())) {
throw Message.getSQLException(ErrorCode.DATABASE_NOT_FOUND_1, catalogName);
}
}
if (!schema.equals(filter.getTable().getSchema().getName())) {
if (!equalsToken(schema, filter.getTable().getSchema().getName())) {
throw Message.getSQLException(ErrorCode.SCHEMA_NOT_FOUND_1, schema);
}
}
if (!tableAlias.equals(filter.getTableAlias())) {
if (!equalsToken(tableAlias, filter.getTableAlias())) {
throw Message.getSQLException(ErrorCode.TABLE_OR_VIEW_NOT_FOUND_1, tableAlias);
}
}
......@@ -679,7 +697,7 @@ public class Parser {
if (readIf("AS")) {
alias = readAliasIdentifier();
} else if (currentTokenType == IDENTIFIER) {
if (!"SET".equals(currentToken)) {
if (!equalsToken("SET", currentToken)) {
// SET is not a keyword (PostgreSQL supports it as a table name)
alias = readAliasIdentifier();
}
......@@ -963,7 +981,7 @@ public class Parser {
String tableName = readIdentifierWithSchema(null);
if (readIf("(")) {
Schema mainSchema = database.getSchema(Constants.SCHEMA_MAIN);
if (tableName.equals(RangeTable.NAME)) {
if (equalsToken(tableName, RangeTable.NAME)) {
Expression min = readExpression();
read(",");
Expression max = readExpression();
......@@ -976,7 +994,7 @@ public class Parser {
}
table = new FunctionTable(mainSchema, session, func, (FunctionCall) func);
}
} else if ("DUAL".equals(tableName)) {
} else if (equalsToken("DUAL", tableName)) {
table = getDualTable();
} else {
table = readTableOrView(tableName);
......@@ -1260,7 +1278,7 @@ public class Parser {
String tableColumnName = tc.getName();
for (Column c : joinCols) {
String joinColumnName = c.getName();
if (tableColumnName.equals(joinColumnName)) {
if (equalsToken(tableColumnName, joinColumnName)) {
join.addNaturalJoinColumn(c);
Expression tableExpr = new ExpressionColumn(database, tableSchema, last
.getTableAlias(), tableColumnName);
......@@ -2134,7 +2152,7 @@ public class Parser {
name = readColumnIdentifier();
if (readIf(".")) {
String databaseName = schema;
if (!database.getShortName().equals(databaseName)) {
if (!equalsToken(database.getShortName(), databaseName)) {
throw Message.getSQLException(ErrorCode.DATABASE_NOT_FOUND_1, databaseName);
}
schema = objectName;
......@@ -2223,13 +2241,13 @@ public class Parser {
}
} else {
read();
if ("X".equals(name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
if (equalsToken("X", name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
read();
byte[] buffer = ByteUtils.convertStringToBytes(currentValue.getString());
r = ValueExpression.get(ValueBytes.getNoCopy(buffer));
} else if (readIf(".")) {
r = readTermObjectDot(name);
} else if ("CASE".equals(name)) {
} else if (equalsToken("CASE", name)) {
// CASE must be processed before (,
// otherwise CASE(3) would be a function call, which it is
// not
......@@ -2241,9 +2259,9 @@ public class Parser {
}
} else if (readIf("(")) {
r = readFunction(name);
} else if ("CURRENT_USER".equals(name)) {
} else if (equalsToken("CURRENT_USER", name)) {
r = readFunctionWithoutParameters("USER");
} else if ("CURRENT".equals(name)) {
} else if (equalsToken("CURRENT", name)) {
if (readIf("TIMESTAMP")) {
r = readFunctionWithoutParameters("CURRENT_TIMESTAMP");
} else if (readIf("TIME")) {
......@@ -2253,24 +2271,24 @@ public class Parser {
} else {
r = new ExpressionColumn(database, null, null, name);
}
} else if ("NEXT".equals(name) && readIf("VALUE")) {
} else if (equalsToken("NEXT", name) && readIf("VALUE")) {
read("FOR");
Sequence sequence = readSequence();
r = new SequenceValue(sequence);
} else if ("DATE".equals(name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
} else if (equalsToken("DATE", name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
String date = currentValue.getString();
read();
r = ValueExpression.get(ValueDate.get(ValueDate.parseDate(date)));
} else if ("TIME".equals(name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
} else if (equalsToken("TIME", name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
String time = currentValue.getString();
read();
r = ValueExpression.get(ValueTime.get(ValueTime.parseTime(time)));
} else if ("TIMESTAMP".equals(name) && currentTokenType == VALUE
} else if (equalsToken("TIMESTAMP", name) && currentTokenType == VALUE
&& currentValue.getType() == Value.STRING) {
String timestamp = currentValue.getString();
read();
r = ValueExpression.get(ValueTimestamp.getNoCopy(ValueTimestamp.parseTimestamp(timestamp)));
} else if ("E".equals(name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
} else if (equalsToken("E", name) && currentTokenType == VALUE && currentValue.getType() == Value.STRING) {
String text = currentValue.getString();
read();
r = ValueExpression.get(ValueString.get(text));
......@@ -2485,8 +2503,8 @@ public class Parser {
s = currentToken;
read();
}
if (".".equals(currentToken)) {
if (schemaName.equalsIgnoreCase(database.getShortName())) {
if (equalsToken(".", currentToken)) {
if (equalsToken(schemaName, database.getShortName())) {
read(".");
schemaName = s;
if (currentTokenType != IDENTIFIER) {
......@@ -2521,14 +2539,14 @@ public class Parser {
}
private void read(String expected) throws SQLException {
if (!expected.equals(currentToken) || currentTokenQuoted) {
if (currentTokenQuoted || !equalsToken(expected, currentToken)) {
throw Message.getSyntaxError(sqlCommand, parseIndex, expected);
}
read();
}
private boolean readIf(String token) throws SQLException {
if (token.equals(currentToken) && !currentTokenQuoted) {
if (!currentTokenQuoted && equalsToken(token, currentToken)) {
read();
return true;
}
......@@ -2537,7 +2555,7 @@ public class Parser {
}
private boolean isToken(String token) {
boolean result = token.equals(currentToken) && !currentTokenQuoted;
boolean result = equalsToken(token, currentToken) && !currentTokenQuoted;
if (result) {
return true;
}
......@@ -2545,6 +2563,16 @@ public class Parser {
return false;
}
private boolean equalsToken(String a, String b) {
if (a.equals(b)) {
return true;
}
if (!identifiersToUpper && a.equalsIgnoreCase(b)) {
return true;
}
return false;
}
private void addExpected(String token) {
if (expectedList != null) {
expectedList.add(token);
......@@ -2956,8 +2984,10 @@ public class Parser {
break;
default:
if (c >= 'a' && c <= 'z') {
command[i] = (char) (c - ('a' - 'A'));
changed = true;
if (identifiersToUpper) {
command[i] = (char) (c - ('a' - 'A'));
changed = true;
}
type = CHAR_NAME;
} else if (c >= 'A' && c <= 'Z') {
type = CHAR_NAME;
......@@ -2966,10 +2996,12 @@ public class Parser {
} else {
if (Character.isJavaIdentifierPart(c)) {
type = CHAR_NAME;
char u = Character.toUpperCase(c);
if (u != c) {
command[i] = u;
changed = true;
if (identifiersToUpper) {
char u = Character.toUpperCase(c);
if (u != c) {
command[i] = u;
changed = true;
}
}
}
}
......@@ -3076,6 +3108,14 @@ public class Parser {
return getSaveTokenType(s, database.getMode().supportOffsetFetch);
}
private boolean isKeyword(String s) {
if (!identifiersToUpper) {
// if not yet converted to uppercase, do it now
s = StringUtils.toUpperEnglish(s);
}
return isKeyword(s, false);
}
/**
* Checks if this string is a SQL keyword.
*
......@@ -3334,7 +3374,7 @@ public class Parser {
throw Message.getSQLException(ErrorCode.UNKNOWN_DATA_TYPE_1, currentToken);
}
}
if (database.getIgnoreCase() && dataType.type == Value.STRING && !"VARCHAR_CASESENSITIVE".equals(original)) {
if (database.getIgnoreCase() && dataType.type == Value.STRING && !equalsToken("VARCHAR_CASESENSITIVE", original)) {
original = "VARCHAR_IGNORECASE";
dataType = DataType.getTypeByName(original);
}
......@@ -3645,7 +3685,7 @@ public class Parser {
boolean ifNotExists = readIfNoExists();
String constantName = readIdentifierWithSchema();
Schema schema = getSchema();
if (isKeyword(constantName, false)) {
if (isKeyword(constantName)) {
throw Message.getSQLException(ErrorCode.CONSTANT_ALREADY_EXISTS_1, constantName);
}
read("VALUE");
......@@ -3662,7 +3702,7 @@ public class Parser {
CreateAggregate command = new CreateAggregate(session);
command.setForce(force);
String name = readUniqueIdentifier();
if (isKeyword(name, false) || Function.getFunction(database, name) != null || Aggregate.getAggregateType(name) >= 0) {
if (isKeyword(name) || Function.getFunction(database, name) != null || Aggregate.getAggregateType(name) >= 0) {
throw Message.getSQLException(ErrorCode.FUNCTION_ALIAS_ALREADY_EXISTS_1, name);
}
command.setName(name);
......@@ -3772,7 +3812,7 @@ public class Parser {
CreateFunctionAlias command = new CreateFunctionAlias(session);
command.setForce(force);
String name = readUniqueIdentifier();
if (isKeyword(name, false) || Function.getFunction(database, name) != null || Aggregate.getAggregateType(name) >= 0) {
if (isKeyword(name) || Function.getFunction(database, name) != null || Aggregate.getAggregateType(name) >= 0) {
throw Message.getSQLException(ErrorCode.FUNCTION_ALIAS_ALREADY_EXISTS_1, name);
}
command.setAliasName(name);
......@@ -4140,7 +4180,7 @@ public class Parser {
readIfEqualOrTo();
if (!readIf("ISO")) {
String s = readString();
if (!s.equals("ISO")) {
if (!equalsToken(s, "ISO")) {
throw getSyntaxError();
}
}
......@@ -4178,7 +4218,7 @@ public class Parser {
Set command = new Set(session, SetTypes.COLLATION);
String name = readAliasIdentifier();
command.setString(name);
if (name.equals(CompareMode.OFF)) {
if (equalsToken(name, CompareMode.OFF)) {
return command;
}
Collator coll = CompareMode.getCollator(name);
......@@ -4628,7 +4668,7 @@ public class Parser {
private CreateTable parseCreateTable(boolean temp, boolean globalTemp, boolean persistIndexes) throws SQLException {
boolean ifNotExists = readIfNoExists();
String tableName = readIdentifierWithSchema();
if (temp && globalTemp && "SESSION".equals(schemaName)) {
if (temp && globalTemp && equalsToken("SESSION", schemaName)) {
// support weird syntax: declare global temporary table session.xy
// (...) not logged
schemaName = session.getCurrentSchemaName();
......
h2/src/main/org/h2/constant/SysProperties.java
浏览文件 @ c264653e
......@@ -267,6 +267,13 @@ public class SysProperties {
*/
public static final int ESTIMATED_FUNCTION_TABLE_ROWS = getIntSetting("h2.estimatedFunctionTableRows", 1000);
/**
* System property <code>h2.identifiersToUpper</code> (default: true).<br />
* Unquoted identifiers in SQL statements are case insensitive and converted
* to uppercase.
*/
public static final boolean IDENTIFIERS_TO_UPPER = getBooleanSetting("h2.identifiersToUpper", true);
/**
* System property <code>h2.largeResultBufferSize</code> (default: 4096).<br />
* Buffer size for large result sets. Set this value to 0 to disable the
......
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