Java 实施Map<;字符串,列表>;
我需要实现Map,因为普通hashmap不允许多个键值对Java 实施Map<;字符串,列表>;,java,groovy,Java,Groovy,我需要实现Map,因为普通hashmap不允许多个键值对 def createRecommendationMap(List recommendation, Map recommendationMap) { if(!(allMaps.containsKey(RECOMMENDATION_MAP))) { recommendation.each{record -> def javaRec
def createRecommendationMap(List recommendation, Map recommendationMap)
{
if(!(allMaps.containsKey(RECOMMENDATION_MAP)))
{
recommendation.each{record ->
def javaRecord = KdTypeUtil.convertRecordFromKDTypes(record)
def key = // returns just a string
recommendationMap.put(key, javaRecord)
}
allMaps.put(RECOMMENDATION_MAP, recommendationMap)
}
return recommendationMap;
}
我错过了什么
我希望大小为9,但得到的大小仅为8(删除重复的键值)
我期待下面两个键值对,但第二个键值对正在被删除
“非中间出界24.0P10”:[“通道”:“出站”,“库存水平”:0.0,
“产品标识”:“SAM-STD-I9100W-1”,
“报价ID”:“FBUN-MVP-VME-VIRGIN-29-12-05”,“P_乐队”:“P10”,
“合同长度”:24.0,“奖励分数”:15.0,
“客户类型”:“非媒体”]
“非中间出界24.0P10”:[“通道”:“出站”,“库存水平”:0.0,
“产品标识”:“LGE-STD-E960-1”,
“报价ID”:“FBUN-MVP-VME-VIRGIN-29-12-05”,“P_乐队”:“P10”,
“合同长度”:24.0,“奖励分数”:10.0,
“客户类型”:“非媒体”]
看起来你正在重新实现一个多重映射。和都已广泛使用并彻底测试了这方面的实现。非常确定您可以用以下代码替换所有代码:
Map createRecommendationMap( List recommendation ) {
println 'inside createRecommendationMap of Maps **************** '
//If not already created, create the map. Stick to KD types, not many
//fields required.
//Keyed on Tariff type desc, commitment duration, p_band.
if( !allMaps.containsKey(RECOMMENDATION_MAP) ) {
allMaps[ RECOMMENDATION_MAP ] = recommendation.inject( [:] ) { map, r ->
def k = "${r.CUST_TYPE}${r.CHANNEL}${r.CONTRACT_LENGTH}${r.P_BAND}".toString()
def m = map[ k ]
if( !m ) {
m = []
map[ k ] = m
}
m << r
map
}
}
allMaps[ RECOMMENDATION_MAP ]
}
什么是所有地图?你能提供一些输入数据和预期结果吗?嗨,蒂姆,用示例编辑了这个问题。你有一些示例输入吗?另外,什么是
allMaps
?您好,值(渠道、库存水平等)来自DB,对于客户(如果他在特定的值区域),我需要提取值。对于channel=OUTBOUND、custype=NONMEDIA、contractLength=24.0和pBand=P10的值,有两个关联的值,但在我使用map时,第二个值将从map中删除…如果我在编码中无法做到这一点,将尝试包含apache commons jar并对其进行chck。添加了一个可能的解决方案。。。很难说没有额外的信息,但我认为它是正确的…嗨,蒂姆,希望这与GDk的1.5.6版本一起工作…相同的旧限制:-)我已经检查过了,我认为它是好的<代码>映射。默认情况下,表示它从1.0开始就存在,因此,inject
;-)我的allMaps声明是def allMaps=[:]让我尝试返回you@Techie祈祷吧…;-)
class Test {
Map allMaps = [:]
String RECOMMENDATION_MAP = 'SOME_KEY'
Map createRecommendationMap( List recommendation ) {
println 'inside createRecommendationMap of Maps **************** '
//If not already created, create the map. Stick to KD types, not many
//fields required.
//Keyed on Tariff type desc, commitment duration, p_band.
if( !allMaps.containsKey(RECOMMENDATION_MAP) ) {
allMaps[ RECOMMENDATION_MAP ] = recommendation.inject( [:] ) { map, r ->
def k = "${r.CUST_TYPE}${r.CHANNEL}${r.CONTRACT_LENGTH}${r.P_BAND}".toString()
def m = map[ k ]
if( !m ) {
m = []
map[ k ] = m
}
m << r
map
}
}
allMaps[ RECOMMENDATION_MAP ]
}
}
def recommendation = [ ["CHANNEL":"OUTBOUND", "STOCK_LEVEL":0.0, "PRODUCT_ID":"SAM-STD-I9100W-1", "OFFER_ID":"FBUN-MVP-VME-VIRGIN-29-12-05", "P_BAND":"P10", "CONTRACT_LENGTH":24.0, "INCENTIVE_POINTS":15.0, "CUST_TYPE":"NONMEDIA"],
["CHANNEL":"OUTBOUND", "STOCK_LEVEL":0.0, "PRODUCT_ID":"LGE-STD-E960-1", "OFFER_ID":"FBUN-MVP-VME-VIRGIN-29-12-05", "P_BAND":"P10", "CONTRACT_LENGTH":24.0, "INCENTIVE_POINTS":10.0, "CUST_TYPE":"NONMEDIA"] ]
def recommendationMap = new Test().createRecommendationMap( recommendation )
recommendationMap.each { key, value ->
println key
value.each { println " $it" }
}
NONMEDIAOUTBOUND24.0P10
["CHANNEL":"OUTBOUND", "STOCK_LEVEL":0.0, "PRODUCT_ID":"SAM-STD-I9100W-1", "OFFER_ID":"FBUN-MVP-VME-VIRGIN-29-12-05", "P_BAND":"P10", "CONTRACT_LENGTH":24.0, "INCENTIVE_POINTS":15.0, "CUST_TYPE":"NONMEDIA"]
["CHANNEL":"OUTBOUND", "STOCK_LEVEL":0.0, "PRODUCT_ID":"LGE-STD-E960-1", "OFFER_ID":"FBUN-MVP-VME-VIRGIN-29-12-05", "P_BAND":"P10", "CONTRACT_LENGTH":24.0, "INCENTIVE_POINTS":10.0, "CUST_TYPE":"NONMEDIA"]