pull

src/transact/mod.rs

@@ -1,2 +1,4 @@
 pub(crate) mod attr;
+pub(crate) mod pull;
+pub(crate) mod query;
 pub(crate) mod triple;

src/transact/pull.rs

@@ -0,0 +1,25 @@
+use crate::data::attr::{Attribute, AttributeCardinality};
+use crate::data::keyword::Keyword;
+
+pub(crate) type PullSpecs = Vec<PullSpec>;
+
+pub(crate) enum PullSpec {
+    None,
+    PullAll,
+    Recurse(Keyword),
+    Attr(AttrPullSpec),
+}
+
+pub(crate) struct AttrPullSpec {
+    pub(crate) attr: Attribute,
+    pub(crate) reverse: bool,
+    pub(crate) name: Keyword,
+    pub(crate) cardinality: AttributeCardinality,
+    pub(crate) take: Option<usize>,
+    pub(crate) nested: PullSpecs,
+}
+
+pub(crate) struct RecursePullSpec {
+    pub(crate) parent: Keyword,
+    pub(crate) max_depth: Option<usize>,
+}

src/transact/query.rs

@@ -0,0 +1,11 @@
+use crate::data::keyword::Keyword;
+use crate::transact::pull::PullSpec;
+
+pub(crate) struct QuerySpec {
+    find: Vec<(Keyword, PullSpec)>,
+    rules: (),
+    input: (),
+    order: (),
+    limit: Option<usize>,
+    offset: Option<usize>,
+}