1. condition
Create a Condition from a Field, an operator, and a value.
CODE
public Condition condition(Name fieldName, String operator, Object[] values)
2. conditions
Parse varargs into List. Arguments are grouped in pairs (fieldName, value). An operator suffix can be appended to the field name.
CODE
public List<Condition> conditions(Object... condtionKvs)
example:
CODE
// Basic usage: pairs of (fieldName, value)
List<Condition> conds = jt.conditions(
"name", "John", // name = 'John'
"birthday≥", beginDate // birthday ≥ '2020-01-01'
);
// Mixing Condition objects
List<Condition> conds = jt.conditions(
"name", name,
F("create_time").isNotNull(), // passing a Condition directly
"birthday:desc" // OrderBy: birthday DESC (ignored for conditions)
);
// Using conditions with query
List<User> list = jt.query("user_table", User.class,
jt.conditions("name%", name, "birthday>=", beginDate));
| Operator | Meaning | Example |
|---|---|---|
| (none) or == | Equal (eq / isNull) | "name", value → name = ? |
| % | Contains (LIKE) | "name%", "Jo" → name LIKE '%Jo%' |
| %L | Starts with | "name%L", "Jo" → name LIKE 'Jo%' |
| %R | Ends with | "name%R", "hn" → name LIKE '%hn' |
| > | Greater than | "birthday>", date → birthday > ? |
| >= | Greater than or equal | "birthday>=", date → birthday >= ? |
| < | Less than | "age<", 18 → age < ? |
| <= | Less than or equal | "age<=", 18 → age <= ? |
| <> | Not equal | "name<>", "admin" → name <> ? |
| in | IN query | "id", list (Collection/array value) → id IN (?,?,?) |
| notin | NOT IN query | "id:notin", list → id NOT IN (?,?,?) |
| isnull | IS NULL (unary, no value argument) | "name:isnull" → name IS NULL |
| isnotnull | IS NOT NULL (unary, no value argument) | "name:isnotnull" → name IS NOT NULL |
3. Order By
In varargs, can append sort operators to field names to specify ordering. can also pass OrderField objects directly.
example:
CODE
// Mix ordering in varargs
List<User> list = jt.queryv("user_table", User.class,
"birthday:desc", // ORDER BY birthday DESC
F("name").asc().nullsLast() // ORDER BY name ASC NULLS LAST
);
// Pass order list to query()
List<User> list = jt.query("user_table", User.class, conditions,
Arrays.asList(F("birthday").desc(), F("name").asc()));
| Sort Operator | Meaning |
|---|---|
| fieldName:asc | ASC |
| fieldName:desc | DESC |
| fieldName:ascnf | ASC NULLS FIRST |
| fieldName:ascnl | ASC NULLS LAST |
| fieldName:descnf | DESC NULLS FIRST |
| fieldName:descnl | DESC NULLS LAST |
Vollständiger Original-Bericht
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