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我想創造出檢查where子句,如果存儲在列中的值(這是在「Q」級認定爲創建Querydsl where子句來檢查時間戳列
public final DateTimePath<java.sql.Timestamp> startDate = createDateTime("StartDate", java.sql.Timestamp.class);
) 大於或等於提供的值。
該值提供的時間很長,但(自然地)我可以在檢查之前創建任何必要的數據類型。
我曾嘗試以下:
{
....
final QViewVETFullList fullList = QViewVETFullList.viewVETFullList;
....
final String startDate = "28.05.2012"; // test data
final BooleanExpression startDateExp = getDateGTEExpression(fullList.startDate, startDate);
.....
query = query.from(fullList);
query = query.where(startDateExp); // this is where it falls over
...
}
public static BooleanExpression getDateGTEExpression(
DateTimePath<Timestamp> path, String dateStr) {
// this seems to be the problem??
final DateTimePath<Timestamp> datePath = Expressions.dateTimePath(
java.sql.Timestamp.class, dateStr);
// this syntax works successfully with other data types
return BooleanOperation.create(Ops.GOE, path, datePath);
}
代碼編譯並運行到這裏的「其中」添加子句點。 它然後用下面的倒下:
....
Caused by: java.lang.IllegalArgumentException: Undeclared path 28.05.2012
at com.mysema.query.types.ValidatingVisitor.visit(ValidatingVisitor.java:48)
at com.mysema.query.types.ValidatingVisitor.visit(ValidatingVisitor.java:10)
at com.mysema.query.types.path.DateTimePath.accept(DateTimePath.java:46)
at com.mysema.query.types.ValidatingVisitor.visit(ValidatingVisitor.java:101)
at com.mysema.query.types.ValidatingVisitor.visit(ValidatingVisitor.java:36)
at com.mysema.query.types.ValidatingVisitor.visit(ValidatingVisitor.java:10)
at com.mysema.query.types.expr.BooleanOperation.accept(BooleanOperation.java:44)
at com.mysema.query.DefaultQueryMetadata.validate(DefaultQueryMetadata.java:296)
at com.mysema.query.DefaultQueryMetadata.addWhere(DefaultQueryMetadata.java:138)
at com.mysema.query.support.QueryMixin.where(QueryMixin.java:375)
at com.mysema.query.support.QueryBase.where(QueryBase.java:44)
at com.***.***.***.***.***DAOBean.get*****(***tDAOBean.java:185)
我會就此事的任何想法感謝。
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