First returns the first Node entity from the query. Returns a *NotFoundError when no Node was found.
(ctx context.Context)
| 85 | // First returns the first Node entity from the query. |
| 86 | // Returns a *NotFoundError when no Node was found. |
| 87 | func (nq *NodeQuery) First(ctx context.Context) (*Node, error) { |
| 88 | nodes, err := nq.Limit(1).All(setContextOp(ctx, nq.ctx, "First")) |
| 89 | if err != nil { |
| 90 | return nil, err |
| 91 | } |
| 92 | if len(nodes) == 0 { |
| 93 | return nil, &NotFoundError{node.Label} |
| 94 | } |
| 95 | return nodes[0], nil |
| 96 | } |
| 97 | |
| 98 | // FirstX is like First, but panics if an error occurs. |
| 99 | func (nq *NodeQuery) FirstX(ctx context.Context) *Node { |
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