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basic find and download ability
This commit is contained in:
Simon Ding
526
ent/history_query.go
Normal file
526
ent/history_query.go
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@@ -0,0 +1,526 @@
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// Code generated by ent, DO NOT EDIT.
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package ent
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import (
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"context"
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"fmt"
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"math"
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"polaris/ent/history"
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"polaris/ent/predicate"
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"entgo.io/ent/dialect/sql"
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"entgo.io/ent/dialect/sql/sqlgraph"
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"entgo.io/ent/schema/field"
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)
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// HistoryQuery is the builder for querying History entities.
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type HistoryQuery struct {
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config
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ctx *QueryContext
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order []history.OrderOption
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inters []Interceptor
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predicates []predicate.History
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// intermediate query (i.e. traversal path).
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sql *sql.Selector
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path func(context.Context) (*sql.Selector, error)
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}
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// Where adds a new predicate for the HistoryQuery builder.
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func (hq *HistoryQuery) Where(ps ...predicate.History) *HistoryQuery {
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hq.predicates = append(hq.predicates, ps...)
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return hq
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}
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// Limit the number of records to be returned by this query.
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func (hq *HistoryQuery) Limit(limit int) *HistoryQuery {
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hq.ctx.Limit = &limit
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return hq
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}
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// Offset to start from.
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func (hq *HistoryQuery) Offset(offset int) *HistoryQuery {
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hq.ctx.Offset = &offset
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return hq
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}
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// Unique configures the query builder to filter duplicate records on query.
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// By default, unique is set to true, and can be disabled using this method.
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func (hq *HistoryQuery) Unique(unique bool) *HistoryQuery {
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hq.ctx.Unique = &unique
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return hq
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}
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// Order specifies how the records should be ordered.
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func (hq *HistoryQuery) Order(o ...history.OrderOption) *HistoryQuery {
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hq.order = append(hq.order, o...)
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return hq
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}
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// First returns the first History entity from the query.
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// Returns a *NotFoundError when no History was found.
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func (hq *HistoryQuery) First(ctx context.Context) (*History, error) {
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nodes, err := hq.Limit(1).All(setContextOp(ctx, hq.ctx, "First"))
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if err != nil {
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return nil, err
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}
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if len(nodes) == 0 {
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return nil, &NotFoundError{history.Label}
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}
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return nodes[0], nil
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}
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// FirstX is like First, but panics if an error occurs.
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func (hq *HistoryQuery) FirstX(ctx context.Context) *History {
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node, err := hq.First(ctx)
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if err != nil && !IsNotFound(err) {
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panic(err)
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}
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return node
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}
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// FirstID returns the first History ID from the query.
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// Returns a *NotFoundError when no History ID was found.
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func (hq *HistoryQuery) FirstID(ctx context.Context) (id int, err error) {
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var ids []int
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if ids, err = hq.Limit(1).IDs(setContextOp(ctx, hq.ctx, "FirstID")); err != nil {
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return
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}
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if len(ids) == 0 {
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err = &NotFoundError{history.Label}
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return
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}
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return ids[0], nil
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}
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// FirstIDX is like FirstID, but panics if an error occurs.
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func (hq *HistoryQuery) FirstIDX(ctx context.Context) int {
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id, err := hq.FirstID(ctx)
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if err != nil && !IsNotFound(err) {
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panic(err)
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}
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return id
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}
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// Only returns a single History entity found by the query, ensuring it only returns one.
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// Returns a *NotSingularError when more than one History entity is found.
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// Returns a *NotFoundError when no History entities are found.
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func (hq *HistoryQuery) Only(ctx context.Context) (*History, error) {
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nodes, err := hq.Limit(2).All(setContextOp(ctx, hq.ctx, "Only"))
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if err != nil {
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return nil, err
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}
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switch len(nodes) {
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case 1:
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return nodes[0], nil
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case 0:
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return nil, &NotFoundError{history.Label}
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default:
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return nil, &NotSingularError{history.Label}
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}
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}
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// OnlyX is like Only, but panics if an error occurs.
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func (hq *HistoryQuery) OnlyX(ctx context.Context) *History {
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node, err := hq.Only(ctx)
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if err != nil {
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panic(err)
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}
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return node
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}
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// OnlyID is like Only, but returns the only History ID in the query.
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// Returns a *NotSingularError when more than one History ID is found.
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// Returns a *NotFoundError when no entities are found.
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func (hq *HistoryQuery) OnlyID(ctx context.Context) (id int, err error) {
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var ids []int
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if ids, err = hq.Limit(2).IDs(setContextOp(ctx, hq.ctx, "OnlyID")); err != nil {
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return
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}
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switch len(ids) {
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case 1:
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id = ids[0]
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case 0:
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err = &NotFoundError{history.Label}
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default:
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err = &NotSingularError{history.Label}
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}
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return
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}
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// OnlyIDX is like OnlyID, but panics if an error occurs.
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func (hq *HistoryQuery) OnlyIDX(ctx context.Context) int {
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id, err := hq.OnlyID(ctx)
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if err != nil {
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panic(err)
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}
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return id
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}
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// All executes the query and returns a list of Histories.
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func (hq *HistoryQuery) All(ctx context.Context) ([]*History, error) {
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ctx = setContextOp(ctx, hq.ctx, "All")
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if err := hq.prepareQuery(ctx); err != nil {
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return nil, err
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}
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qr := querierAll[[]*History, *HistoryQuery]()
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return withInterceptors[[]*History](ctx, hq, qr, hq.inters)
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}
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// AllX is like All, but panics if an error occurs.
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func (hq *HistoryQuery) AllX(ctx context.Context) []*History {
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nodes, err := hq.All(ctx)
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if err != nil {
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panic(err)
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}
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return nodes
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}
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// IDs executes the query and returns a list of History IDs.
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func (hq *HistoryQuery) IDs(ctx context.Context) (ids []int, err error) {
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if hq.ctx.Unique == nil && hq.path != nil {
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hq.Unique(true)
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}
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ctx = setContextOp(ctx, hq.ctx, "IDs")
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if err = hq.Select(history.FieldID).Scan(ctx, &ids); err != nil {
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return nil, err
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}
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return ids, nil
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}
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// IDsX is like IDs, but panics if an error occurs.
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func (hq *HistoryQuery) IDsX(ctx context.Context) []int {
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ids, err := hq.IDs(ctx)
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if err != nil {
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panic(err)
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}
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return ids
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}
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// Count returns the count of the given query.
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func (hq *HistoryQuery) Count(ctx context.Context) (int, error) {
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ctx = setContextOp(ctx, hq.ctx, "Count")
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if err := hq.prepareQuery(ctx); err != nil {
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return 0, err
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}
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return withInterceptors[int](ctx, hq, querierCount[*HistoryQuery](), hq.inters)
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}
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// CountX is like Count, but panics if an error occurs.
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func (hq *HistoryQuery) CountX(ctx context.Context) int {
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count, err := hq.Count(ctx)
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if err != nil {
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panic(err)
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}
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return count
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}
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// Exist returns true if the query has elements in the graph.
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func (hq *HistoryQuery) Exist(ctx context.Context) (bool, error) {
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ctx = setContextOp(ctx, hq.ctx, "Exist")
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switch _, err := hq.FirstID(ctx); {
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case IsNotFound(err):
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return false, nil
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case err != nil:
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return false, fmt.Errorf("ent: check existence: %w", err)
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default:
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return true, nil
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}
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}
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// ExistX is like Exist, but panics if an error occurs.
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func (hq *HistoryQuery) ExistX(ctx context.Context) bool {
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exist, err := hq.Exist(ctx)
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if err != nil {
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panic(err)
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}
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return exist
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}
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// Clone returns a duplicate of the HistoryQuery builder, including all associated steps. It can be
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// used to prepare common query builders and use them differently after the clone is made.
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func (hq *HistoryQuery) Clone() *HistoryQuery {
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if hq == nil {
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return nil
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}
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return &HistoryQuery{
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config: hq.config,
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ctx: hq.ctx.Clone(),
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order: append([]history.OrderOption{}, hq.order...),
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inters: append([]Interceptor{}, hq.inters...),
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predicates: append([]predicate.History{}, hq.predicates...),
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// clone intermediate query.
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sql: hq.sql.Clone(),
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path: hq.path,
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}
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}
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// GroupBy is used to group vertices by one or more fields/columns.
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// It is often used with aggregate functions, like: count, max, mean, min, sum.
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//
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// Example:
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//
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// var v []struct {
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// SeriesID int `json:"series_id,omitempty"`
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// Count int `json:"count,omitempty"`
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// }
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//
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// client.History.Query().
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// GroupBy(history.FieldSeriesID).
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// Aggregate(ent.Count()).
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// Scan(ctx, &v)
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func (hq *HistoryQuery) GroupBy(field string, fields ...string) *HistoryGroupBy {
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hq.ctx.Fields = append([]string{field}, fields...)
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grbuild := &HistoryGroupBy{build: hq}
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grbuild.flds = &hq.ctx.Fields
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grbuild.label = history.Label
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grbuild.scan = grbuild.Scan
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return grbuild
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}
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// Select allows the selection one or more fields/columns for the given query,
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// instead of selecting all fields in the entity.
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//
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// Example:
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//
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// var v []struct {
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// SeriesID int `json:"series_id,omitempty"`
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// }
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//
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// client.History.Query().
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// Select(history.FieldSeriesID).
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// Scan(ctx, &v)
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func (hq *HistoryQuery) Select(fields ...string) *HistorySelect {
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hq.ctx.Fields = append(hq.ctx.Fields, fields...)
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sbuild := &HistorySelect{HistoryQuery: hq}
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sbuild.label = history.Label
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sbuild.flds, sbuild.scan = &hq.ctx.Fields, sbuild.Scan
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return sbuild
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}
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// Aggregate returns a HistorySelect configured with the given aggregations.
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func (hq *HistoryQuery) Aggregate(fns ...AggregateFunc) *HistorySelect {
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return hq.Select().Aggregate(fns...)
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}
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func (hq *HistoryQuery) prepareQuery(ctx context.Context) error {
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for _, inter := range hq.inters {
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if inter == nil {
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return fmt.Errorf("ent: uninitialized interceptor (forgotten import ent/runtime?)")
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}
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if trv, ok := inter.(Traverser); ok {
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if err := trv.Traverse(ctx, hq); err != nil {
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return err
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}
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}
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}
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for _, f := range hq.ctx.Fields {
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if !history.ValidColumn(f) {
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return &ValidationError{Name: f, err: fmt.Errorf("ent: invalid field %q for query", f)}
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}
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}
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if hq.path != nil {
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prev, err := hq.path(ctx)
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if err != nil {
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return err
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}
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hq.sql = prev
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}
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return nil
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}
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func (hq *HistoryQuery) sqlAll(ctx context.Context, hooks ...queryHook) ([]*History, error) {
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var (
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nodes = []*History{}
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_spec = hq.querySpec()
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)
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_spec.ScanValues = func(columns []string) ([]any, error) {
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return (*History).scanValues(nil, columns)
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}
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_spec.Assign = func(columns []string, values []any) error {
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node := &History{config: hq.config}
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nodes = append(nodes, node)
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return node.assignValues(columns, values)
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}
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for i := range hooks {
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hooks[i](ctx, _spec)
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}
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if err := sqlgraph.QueryNodes(ctx, hq.driver, _spec); err != nil {
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return nil, err
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}
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if len(nodes) == 0 {
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return nodes, nil
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}
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return nodes, nil
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}
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func (hq *HistoryQuery) sqlCount(ctx context.Context) (int, error) {
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_spec := hq.querySpec()
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_spec.Node.Columns = hq.ctx.Fields
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if len(hq.ctx.Fields) > 0 {
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_spec.Unique = hq.ctx.Unique != nil && *hq.ctx.Unique
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}
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return sqlgraph.CountNodes(ctx, hq.driver, _spec)
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}
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func (hq *HistoryQuery) querySpec() *sqlgraph.QuerySpec {
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_spec := sqlgraph.NewQuerySpec(history.Table, history.Columns, sqlgraph.NewFieldSpec(history.FieldID, field.TypeInt))
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_spec.From = hq.sql
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if unique := hq.ctx.Unique; unique != nil {
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_spec.Unique = *unique
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} else if hq.path != nil {
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_spec.Unique = true
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}
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if fields := hq.ctx.Fields; len(fields) > 0 {
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_spec.Node.Columns = make([]string, 0, len(fields))
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_spec.Node.Columns = append(_spec.Node.Columns, history.FieldID)
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for i := range fields {
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if fields[i] != history.FieldID {
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_spec.Node.Columns = append(_spec.Node.Columns, fields[i])
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}
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||||
}
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||||
}
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if ps := hq.predicates; len(ps) > 0 {
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||||
_spec.Predicate = func(selector *sql.Selector) {
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for i := range ps {
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||||
ps[i](selector)
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||||
}
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||||
}
|
||||
}
|
||||
if limit := hq.ctx.Limit; limit != nil {
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_spec.Limit = *limit
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}
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if offset := hq.ctx.Offset; offset != nil {
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_spec.Offset = *offset
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}
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if ps := hq.order; len(ps) > 0 {
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_spec.Order = func(selector *sql.Selector) {
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for i := range ps {
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ps[i](selector)
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||||
}
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||||
}
|
||||
}
|
||||
return _spec
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}
|
||||
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func (hq *HistoryQuery) sqlQuery(ctx context.Context) *sql.Selector {
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builder := sql.Dialect(hq.driver.Dialect())
|
||||
t1 := builder.Table(history.Table)
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columns := hq.ctx.Fields
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||||
if len(columns) == 0 {
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||||
columns = history.Columns
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||||
}
|
||||
selector := builder.Select(t1.Columns(columns...)...).From(t1)
|
||||
if hq.sql != nil {
|
||||
selector = hq.sql
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selector.Select(selector.Columns(columns...)...)
|
||||
}
|
||||
if hq.ctx.Unique != nil && *hq.ctx.Unique {
|
||||
selector.Distinct()
|
||||
}
|
||||
for _, p := range hq.predicates {
|
||||
p(selector)
|
||||
}
|
||||
for _, p := range hq.order {
|
||||
p(selector)
|
||||
}
|
||||
if offset := hq.ctx.Offset; offset != nil {
|
||||
// limit is mandatory for offset clause. We start
|
||||
// with default value, and override it below if needed.
|
||||
selector.Offset(*offset).Limit(math.MaxInt32)
|
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}
|
||||
if limit := hq.ctx.Limit; limit != nil {
|
||||
selector.Limit(*limit)
|
||||
}
|
||||
return selector
|
||||
}
|
||||
|
||||
// HistoryGroupBy is the group-by builder for History entities.
|
||||
type HistoryGroupBy struct {
|
||||
selector
|
||||
build *HistoryQuery
|
||||
}
|
||||
|
||||
// Aggregate adds the given aggregation functions to the group-by query.
|
||||
func (hgb *HistoryGroupBy) Aggregate(fns ...AggregateFunc) *HistoryGroupBy {
|
||||
hgb.fns = append(hgb.fns, fns...)
|
||||
return hgb
|
||||
}
|
||||
|
||||
// Scan applies the selector query and scans the result into the given value.
|
||||
func (hgb *HistoryGroupBy) Scan(ctx context.Context, v any) error {
|
||||
ctx = setContextOp(ctx, hgb.build.ctx, "GroupBy")
|
||||
if err := hgb.build.prepareQuery(ctx); err != nil {
|
||||
return err
|
||||
}
|
||||
return scanWithInterceptors[*HistoryQuery, *HistoryGroupBy](ctx, hgb.build, hgb, hgb.build.inters, v)
|
||||
}
|
||||
|
||||
func (hgb *HistoryGroupBy) sqlScan(ctx context.Context, root *HistoryQuery, v any) error {
|
||||
selector := root.sqlQuery(ctx).Select()
|
||||
aggregation := make([]string, 0, len(hgb.fns))
|
||||
for _, fn := range hgb.fns {
|
||||
aggregation = append(aggregation, fn(selector))
|
||||
}
|
||||
if len(selector.SelectedColumns()) == 0 {
|
||||
columns := make([]string, 0, len(*hgb.flds)+len(hgb.fns))
|
||||
for _, f := range *hgb.flds {
|
||||
columns = append(columns, selector.C(f))
|
||||
}
|
||||
columns = append(columns, aggregation...)
|
||||
selector.Select(columns...)
|
||||
}
|
||||
selector.GroupBy(selector.Columns(*hgb.flds...)...)
|
||||
if err := selector.Err(); err != nil {
|
||||
return err
|
||||
}
|
||||
rows := &sql.Rows{}
|
||||
query, args := selector.Query()
|
||||
if err := hgb.build.driver.Query(ctx, query, args, rows); err != nil {
|
||||
return err
|
||||
}
|
||||
defer rows.Close()
|
||||
return sql.ScanSlice(rows, v)
|
||||
}
|
||||
|
||||
// HistorySelect is the builder for selecting fields of History entities.
|
||||
type HistorySelect struct {
|
||||
*HistoryQuery
|
||||
selector
|
||||
}
|
||||
|
||||
// Aggregate adds the given aggregation functions to the selector query.
|
||||
func (hs *HistorySelect) Aggregate(fns ...AggregateFunc) *HistorySelect {
|
||||
hs.fns = append(hs.fns, fns...)
|
||||
return hs
|
||||
}
|
||||
|
||||
// Scan applies the selector query and scans the result into the given value.
|
||||
func (hs *HistorySelect) Scan(ctx context.Context, v any) error {
|
||||
ctx = setContextOp(ctx, hs.ctx, "Select")
|
||||
if err := hs.prepareQuery(ctx); err != nil {
|
||||
return err
|
||||
}
|
||||
return scanWithInterceptors[*HistoryQuery, *HistorySelect](ctx, hs.HistoryQuery, hs, hs.inters, v)
|
||||
}
|
||||
|
||||
func (hs *HistorySelect) sqlScan(ctx context.Context, root *HistoryQuery, v any) error {
|
||||
selector := root.sqlQuery(ctx)
|
||||
aggregation := make([]string, 0, len(hs.fns))
|
||||
for _, fn := range hs.fns {
|
||||
aggregation = append(aggregation, fn(selector))
|
||||
}
|
||||
switch n := len(*hs.selector.flds); {
|
||||
case n == 0 && len(aggregation) > 0:
|
||||
selector.Select(aggregation...)
|
||||
case n != 0 && len(aggregation) > 0:
|
||||
selector.AppendSelect(aggregation...)
|
||||
}
|
||||
rows := &sql.Rows{}
|
||||
query, args := selector.Query()
|
||||
if err := hs.driver.Query(ctx, query, args, rows); err != nil {
|
||||
return err
|
||||
}
|
||||
defer rows.Close()
|
||||
return sql.ScanSlice(rows, v)
|
||||
}
|
||||
Reference in New Issue
Block a user