变量必须提供维度表达式或数组初始值设定项错误
出于测试目的,我硬编码了一个bean数组,因此我可以将变量传递给数据库。 我现在从表单中提取变量,并且如果它们不为null,则希望在bean数组中设置它们。 我认为我的语法错了。
硬编码:
CriteriaBean[] filters = new CriteriaBean[] { new CriteriaBean("YEAR","=","2012"), new CriteriaBean("LOCATION","in","('XXX','YYY')"), new CriteriaBean("TOM","is","not null") };
我试图做这样的事情并得到错误:
CriteriaBean[] filters = new CriteriaBean[] { if (form.getYear() != null) { new CriteriaBean("YEAR","=","2012") } };
CriteriaBean
public class CriteriaBean { public static final CriteriaBean[] EMPTY_ARRAY = new CriteriaBean[0]; private String fieldName; private String value; private String operation; public CriteriaBean() { } public CriteriaBean( String field, String op, String val ) { this.fieldName = field; this.operation = op; this.value = val; } public String getName() { return this.name; } public String getOp() { return this.op; } public String getVal() { return this.val; } public void setName(String val) { this.name = val; } public void setOp(String val) { this.op = val; } public void setVal(String val) { this.val = val; }
有一个更好的方法吗??
关! 尝试这个:
CriteriaBean[] filters = form.getWySelect() == null ? new CriteriaBean[] {} : new CriteriaBean[] { new CriteriaBean("WORKLOAD_YEAR","=","2012") };
此代码使用三元语法根据条件使用备用初始值设定项。