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docs: Add examples of complex selection filters #185

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Mar 2, 2022
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docs: Add examples of complex selection filters #185

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34 changes: 32 additions & 2 deletions book/src/filters/selection.md
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ argument = <predicate argument>

Allowing only block and transaction events to pass:

```
```toml
[[filters]]
type = "Selection"

Expand All @@ -55,7 +55,7 @@ argument = ["Block", "Transaction"]

Using the `not` predicate to allow all events except the variant `Transaction`:

```
```toml
[[filters]]
type = "Selection"

Expand All @@ -66,3 +66,33 @@ predicate = "not"
predicate = "variant_in"
argument = ["Transaction"]
```

Using the `any_of` (aka: "or") predicate to filter events presenting any of two different policies:

```toml
[filters.check]
predicate = "any_of"

[[filters.check.argument]]
predicate = "policy_equals"
argument = "4bf184e01e0f163296ab253edd60774e2d34367d0e7b6cbc689b567d"

[[filters.check.argument]]
predicate = "policy_equals"
argument = "a5bb0e5bb275a573d744a021f9b3bff73595468e002755b447e01559"
```

Using the `all_of` (aka: "and") to filter only "asset" events presenting a particular policy:

```toml
[filters.check]
predicate = "all_of"

[[filters.check.argument]]
predicate = "variant_in"
argument = ["OutputAsset"]

[[filters.check.argument]]
predicate = "policy_equals"
argument = "a5bb0e5bb275a573d744a021f9b3bff73595468e002755b447e01559"
```