ibatis map标签记录

Table Binary conditional attributes

Element	Description
<isEqual>	Checks the equality of a property and a value, or another property. Example Usage: <isEqual prepend="AND" property="status" compareValue="Y"> MARRIED = ‘TRUE' </isEqual>
<isNotEqual>	Checks the inequality of a property and a value, or another property. Example Usage: <isNotEqual prepend="AND" property="status" compareValue="N"> MARRIED = ‘FALSE' </isNotEqual>
<isGreaterThan>	Checks if a property is greater than a value or another property. Example Usage: <isGreaterThan prepend="AND" property="age" compareValue="18"> ADOLESCENT = ‘FALSE' </isGreaterThan>
<isGreaterEqual>	Checks if a property is greater than or equal to a value or another property. Example Usage: <isGreaterEqual prepend="AND" property="shoeSize" compareValue="12"> BIGFOOT = ‘TRUE' </isGreaterEqual>
<isLessEqual>	Checks if a property is less than or equal to a value or another property. Example Usage: <isLessEqual prepend="AND" property="age" compareValue="18"> ADOLESCENT = ‘TRUE' </isLessEqual>

Table?.8.Bnary conditional attributes

Element	Description
<isPropertyAvailable>	Checks if a property is available (i.e is a property of the parameter object). Example Usage: <isPropertyAvailable property="id" > ACCOUNT_ID=#id# </isPropertyAvailable>
<isNotPropertyAvailable>	Checks if a property is unavailable (i.e not a property of the parameter object). Example Usage: <isNotPropertyAvailable property="age" > STATUS='New' </isNotEmpty>
<isNull>	Checks if a property is null. Example Usage: <isNull prepend="AND" property="order.id" > ACCOUNT.ACCOUNT_ID = ORDER.ACCOUNT_ID(+) </isNotEmpty>
<isNotNull>	Checks if a property is not null. Example Usage: <isNotNull prepend="AND" property="order.id" > ORDER.ORDER_ID = #order.id# </isNotEmpty>
<isEmpty>	Checks to see if the value of a Collection, String property is null or empty ("" or size() < 1). Example Usage: <isEmpty property="firstName" > LIMIT 0, 20 </isNotEmpty>
<isNotEmpty>	Checks to see if the value of a Collection, String property is not null and not empty ("" or size() < 1). Example Usage: <isNotEmpty prepend="AND" property="firstName" > FIRST_NAME LIKE '%$FirstName$%' </isNotEmpty>

Element	Description
<isParameterPresent>	Checks to see if the parameter object is present (not null). <isParameterPresent prepend="AND"> EMPLOYEE_TYPE = #empType# </isParameterPresent>
<isNotParameterPresent>	Checks to see if the parameter object is not present (null). Example Usage: <isNotParameterPresent prepend="AND"> EMPLOYEE_TYPE = ‘DEFAULT' </isNotParameterPresent>

Table?.10.Creating a list of conditional clauses

Element

Description

<iterate>

Iterates over a property that is of type IList Example Usage: <iterate prepend="AND" property="UserNameList" open="(" close=")" conjunction="OR"> username=#UserNameList[]# </iterate> Note: It is very important to include the square brackets[] at the end of the List property name when using the Iterate element. These brackets distinguish this object as an List to keep the parser from simply outputting the List as a string.