build a java function

I want a java function, where i will provide source_json and mapping_json , and it should apply mapping json on source json and provide me output json

below are the examples/cases

Case 1 :
source json will be

{
"a":"val_a",
"b":
{
"b1":"val_b1",
"b2":"val_b2"
},
"c":
{
"c1":"val_c1",
"c2":
{
"c21":"val_c21",
"c22":"val_c22"
}
}
}

mapping json will be

{
"oa" :"a" ,
"ob" : "b.b1",
"oc" : "c.c1",
"oc1": "c.c2.c21"
}


output should be

{
"oa":"val_a",
"ob":"val_b1",
"oc":"val_c1",
"oc1" : "val_c21"
}


case 2 :

source json will be:
[
{
"a": "val_a0",
"b": {
"b1": "val_b01",
"b2": "val_b02"
},
"c": {
"c1": "val_c01",
"c2": {
"c21": "val_c021",
"c22": "val_c022"
}
}
},
{
"a": "val_a1",
"b": {
"b1": "val_b11",
"b2": "val_b12"
},
"c": {
"c1": "val_c11",
"c2": {
"c21": "val_c121",
"c22": "val_c122"
}
}
}
]

mapping json will be

{
"oa" : "a",
"ob" : "b.b1",
"oc" : "c.c1",
"oc1 : "c.c2.c21""
}

output should be
[
{
"oa":"val_a0",
"ob":"val_b01",
"oc":"val_c01",
"oc1" : "val_c021"
}, {
"oa":"val_a1",
"ob":"val_b11",
"oc":"val_c11",
"oc1" : "val_c121"
}
]


case 3 :

source json will be

[
{
"a": "val_a0",
"b": {
"b1": "val_b01",
"b2": "val_b02"
},
"c": {
"c1": "val_c01",
"c2": [
{
"c21": "val_c021_0",
"c22": "val_c022_0"
},
{
"c21": "val_c021_1",
"c22": "val_c022_1"
}
]
}
},
{
"a": "val_a1",
"b": {
"b1": "val_b11",
"b2": "val_b12"
},
"c": {
"c1": "val_c11",
"c2": [
{
"c21": "val_c121_0",
"c22": "val_c122_0"
},
{
"c21": "val_c121_1",
"c22": "val_c122_1"
}
]
}
}
]

mapping json will be
{
"o.oa" : "a",
"o.ob" : "b.b1",
"o.oc" : "c.c1",
"o.oc1 : "c.c2.c21""
}

output should be
{"o" :[
{
"oa": "val_a0",
"ob": "val_b01",
"oc": "val_c01",
"oc1": [
{
"c21": "val_c021_0"
},
{
"c21": "val_c021_1"
}
]
},
{
"oa": "val_a1",
"ob": "val_b11",
"oc": "val_c11",
"oc1": [
{
"c21": "val_c121_0"
},
{
"c21": "val_c121_1"
}
]
}
]
}



case 4 :

source json will be

{
"Response": {
"Status": {
"HttpCode": 200
},
"Services": [
{
"service": [
{
"servername": "mycomp1",
"usage": "18.5%",
"process": "disk"
},
{
"servername": "mycomp2",
"usage": "80.7%",
"process": "disk"
}
]
}
]
}
}

mapping json will be

{
"responseBody.data.name" : "Response.Services.service.servername",
"responseBody.data.used" : "Response.Services.service.usage",
"responseBody.data.proc" : "Response.Services.service.process"
}

output should be

{
"responseBody" : {
"data" :[
{
"name": "mycomp1",
"used": "18.5%",
"proc": "disk"
},
{
"name": "mycomp2",
"used": "80.7%",
"proc": "disk"
}
]
}
}