48 lines
1.4 KiB
C#
48 lines
1.4 KiB
C#
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using System.Collections.Generic;
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namespace LeanCloud.Storage.Internal {
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internal class QueryCompositionalCondition : IQueryCondition {
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internal const string AND = "$and";
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internal const string OR = "$or";
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readonly List<IQueryCondition> conditions;
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readonly string composition;
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internal QueryCompositionalCondition(string composition = AND) {
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conditions = new List<IQueryCondition>();
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this.composition = composition;
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}
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public bool Equals(IQueryCondition other) {
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return false;
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}
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public IDictionary<string, object> ToJSON() {
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if (conditions == null || conditions.Count == 0) {
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return null;
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}
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if (conditions.Count == 1) {
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return conditions[0].ToJSON();
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}
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List<object> list = new List<object>();
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foreach (IQueryCondition cond in conditions) {
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list.Add(cond.ToJSON());
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}
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return new Dictionary<string, object> {
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{ composition, list }
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};
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}
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internal void AddCondition(IQueryCondition condition) {
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if (condition == null) {
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return;
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}
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// 组合查询的 Key 为 null
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conditions.RemoveAll(cond => {
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return cond.Equals(condition);
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});
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conditions.Add(condition);
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}
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}
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}
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