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1.0 remove optional #3

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1.0 remove optional #3

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e9db5ff
fix(neo4j): replace optional match with list comprehension
boolpath Jul 10, 2020
3139620
refactor: create and match :Unspent outputs
boolpath Sep 24, 2020
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27 changes: 16 additions & 11 deletions lib/database/neo4j/queries/spendTransactionOutputs.js
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Original file line number Diff line number Diff line change
Expand Up @@ -10,33 +10,38 @@ const query = `
where address.id = thisOutput.address set address.writeLock = timestamp()
with *, thisOutput.sources + [''] as pointers
unwind [pointer in pointers | split(pointer, '::')] as pointer
optional match (address)-[output:Outputs]->(source:Transaction)
where source.id = pointer[0] and output.id = toInteger(pointer[1])
and not (source)<-[:Sources {id: output.id}]-(:Transaction) set source.LOCKED = true
with countspace, params, collect(distinct source) as sources,
reduce(pointers = [], pointer in [output in params.outputs |
output.sources] | pointers + pointer) as reducedPointers,
collect(distinct source.id + '::' + output.id) as pointers
with *, [
(address)-[output:Unspent]->(source:Transaction)
where source.id = pointer[0] and output.id = toInteger(pointer[1])
and not (source)<-[:Sources {id: output.id}]-(:Transaction)
| {node: source, unspent: output}
] as _sources
with countspace, params, reduce(S = [], s in collect(_sources) | S + s) as sources,
reduce(P = [], p in [output in params.outputs | output.sources] | P + p) as paramsPointers
with *, [source in sources | source.node] as sourceNodes,
[source in sources | source.unspent] as unspentOutputs

create (transaction:Transaction {id: $id, time: timestamp()})
foreach (_ in case when size(pointers)=size(reducedPointers) then [1] else [] end |
foreach (_ in case when size(unspentOutputs)=size(paramsPointers) then [1] else [] end |
foreach (input in params.inputs | merge (transaction)-[:Inputs]->(:IOU {id: input.hash}))
foreach (unspent in unspentOutputs | delete unspent)
foreach (output in params.outputs |
foreach (pointer in [source in output.sources | split(source, '::')] |
foreach (funding in [source in sources where pointer[0] = source.id] |
foreach (funding in [source in sourceNodes where pointer[0] = source.id] |
merge (transaction)-[:Sources {id: toInteger(pointer[1])}]->(funding)))
)
foreach (output in params.outputs |
merge (countspace)-[:Addresses]->(address:Address {id: output.address})
merge (address)-[:Outputs {id: toInteger(output.index)}]->(transaction)
merge (address)-[:Unspent {id: toInteger(output.index)}]->(transaction)
)
)

foreach (source in sources | remove source.LOCKED)
foreach (source in sources | remove source.node.LOCKED)
with transaction, transaction.id as id, countspace.id as symbol, params,
[(transaction)-[input:Inputs]->(iou) | iou.id] as inputs,
[(transaction)-[source:Sources]->(funding) | funding.id + '::' + source.id] as sources,
[(transaction)<-[output:Outputs]-(address) | address.id + '::' + output.id] as newputs
[(transaction)<-[output:Unspent]-(address) | address.id + '::' + output.id] as newputs
return id, symbol, inputs, sources, [output in params.outputs where
(output.address + '::' + toInteger(output.index)) in newputs | output] as outputs
`
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