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Code Issues Releases Wiki Activity

支持Pivot

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git-svn-id: http://code.alibabatech.com/svn/druid/trunk@166 b9813039-fb51-4c41-a8b9-e21c2acb5095
This commit is contained in:
wenshao
2011-05-21 02:28:41 +00:00
parent 793ea1ccd0
commit d1d7eba43a
8 changed files with 71 additions and 100 deletions
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src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/clause/PivotClause.java
-59
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@@ -1,59 +0,0 @@
package com.alibaba.druid.sql.dialect.oracle.ast.clause;
import java.util.ArrayList;
import java.util.List;
import com.alibaba.druid.sql.ast.SQLName;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleAggregateExpr;
public class PivotClause {
private boolean xml;
private final List<Entry> entries = new ArrayList<Entry>();
private final List<SQLName> pivotFor = new ArrayList<SQLName>();
private final List<SQLName> pivotIn = new ArrayList<SQLName>();
public List<Entry> getEntries() {
return entries;
}
public List<SQLName> getPivotFor() {
return pivotFor;
}
public List<SQLName> getPivotIn() {
return pivotIn;
}
public static class Entry {
private OracleAggregateExpr aggregateExpr;
private String alias;
public OracleAggregateExpr getAggregateExpr() {
return aggregateExpr;
}
public void setAggregateExpr(OracleAggregateExpr aggregateExpr) {
this.aggregateExpr = aggregateExpr;
}
public String getAlias() {
return alias;
}
public void setAlias(String alias) {
this.alias = alias;
}
}
public boolean isXml() {
return xml;
}
public void setXml(boolean xml) {
this.xml = xml;
}
}
src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/visitor/OracleOutputVisitor.java
+1
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@@ -1684,5 +1684,6 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
public void endVisit(CycleClause x) {
}
}
src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleExprParser.java
+18
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@@ -23,6 +23,8 @@ import com.alibaba.druid.sql.dialect.oracle.ast.OracleOrderBy;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleAggregateExpr;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleAnalytic;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleAnalyticWindowing;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleDateTimeUnit;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleExtractExpr;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleIntervalExpr;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OracleIntervalType;
import com.alibaba.druid.sql.dialect.oracle.ast.expr.OraclePriorExpr;
@@ -97,6 +99,22 @@ public class OracleExprParser extends SQLExprParser {
String alias = '"' + lexer.stringVal() + '"';
lexer.nextToken();
return primaryRest(new SQLIdentifierExpr(alias));
case EXTRACT:
lexer.nextToken();
OracleExtractExpr extract = new OracleExtractExpr();
accept(Token.LPAREN);
extract.setUnit(OracleDateTimeUnit.valueOf(lexer.stringVal()));
lexer.nextToken();
accept(Token.FROM);
extract.setFrom(expr());
accept(Token.RPAREN);
return primaryRest(extract);
default:
return super.primary();
}
src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleLexer.java
+1
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@@ -86,6 +86,7 @@ public class OracleLexer extends Lexer {
map.put("CONNECT", Token.CONNECT);
map.put("PRIOR", Token.PRIOR);
map.put("WITH", Token.WITH);
map.put("EXTRACT", Token.EXTRACT);
DEFAULT_ORACLE_KEYWORDS = new Keywords(map);
}
src/main/java/com/alibaba/druid/sql/dialect/oracle/parser/OracleSelectParser.java
+15 -6
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@@ -638,7 +638,7 @@ public class OracleSelectParser extends SQLSelectParser {
lexer.nextToken();
}
acceptIdentifier("FOR");
accept(Token.FOR);
if (lexer.token() == (Token.LPAREN)) {
lexer.nextToken();
@@ -656,17 +656,26 @@ public class OracleSelectParser extends SQLSelectParser {
lexer.nextToken();
}
acceptIdentifier("IN");
accept(Token.IN);
accept(Token.LPAREN);
if (lexer.token() == (Token.LPAREN)) throw new ParserException("TODO");
if (lexer.token() == (Token.SELECT)) throw new ParserException("TODO");
while (true) {
if (lexer.token() == (Token.LPAREN)) {
throw new ParserException("TODO");
}
if (lexer.token() == (Token.SELECT)) {
throw new ParserException("TODO");
}
for (;;) {
item = new OracleSelectPivot.Item();
item.setExpr(this.createExprParser().expr());
item.setAlias(as());
pivot.getPivotIn().add(item);
if (!(lexer.token() == (Token.COMMA))) break;
if (lexer.token() != Token.COMMA) {
break;
}
lexer.nextToken();
}