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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 | 9x 9x 9x 9x 9x 9x 9x 8x 8x 8x 8x 1x 1x 1x 1x 2x 6x 9x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x 6x | import { AttributeOption, ConditionBuilderOption } from "./options";
import {
Model,
ModelErrorDefinition,
required,
} from "@decaf-ts/decorator-validation";
import { GroupOperator, Operator } from "./constants";
import { QueryError } from "./errors";
/**
* @summary Condition Class
* @description Represents a logical condition
*
* @param {string | Condition} attr1
* @param {Operator | GroupOperator} operator
* @param {string | Condition} comparison
*
* @class Condition
*/
export class Condition<M extends Model> extends Model {
@required()
protected attr1?: string | Condition<M> = undefined;
@required()
protected operator?: Operator | GroupOperator = undefined;
@required()
protected comparison?: any = undefined;
private constructor(
attr1: string | Condition<M>,
operator: Operator | GroupOperator,
comparison: any
) {
super();
this.attr1 = attr1;
this.operator = operator;
this.comparison = comparison;
}
/**
* @summary Joins 2 {@link Condition}s on an {@link Operator#AND} operation
* @param {Condition} condition
*/
and(condition: Condition<M>): Condition<M> {
return Condition.and(this, condition);
}
/**
* @summary Joins 2 {@link Condition}s on an {@link Operator#OR} operation
* @param {Condition} condition
*/
or(condition: Condition<M>): Condition<M> {
return Condition.or(this, condition);
}
/**
* @summary excludes a valut from the result
* @param val
*/
not(val: any): Condition<M> {
return new Condition(this, Operator.NOT, val);
}
/**
* @inheritDoc
*/
override hasErrors(
...exceptions: string[]
): ModelErrorDefinition | undefined {
const errors = super.hasErrors(...exceptions);
Iif (errors) return errors;
const invalidOpMessage = `Invalid operator ${this.operator}}`;
Iif (typeof this.attr1 === "string") {
Iif (this.comparison instanceof Condition)
return {
comparison: {
condition: "Both sides of the comparison must be of the same type",
},
} as ModelErrorDefinition;
Iif (Object.values(Operator).indexOf(this.operator as Operator) === -1)
return {
operator: {
condition: invalidOpMessage,
},
} as ModelErrorDefinition;
}
Iif (this.attr1 instanceof Condition) {
Iif (
!(this.comparison instanceof Condition) &&
this.operator !== Operator.NOT
)
return {
comparison: {
condition: invalidOpMessage,
},
} as ModelErrorDefinition;
Iif (
Object.values(GroupOperator).indexOf(this.operator as GroupOperator) ===
-1 &&
this.operator !== Operator.NOT
)
return {
operator: {
condition: invalidOpMessage,
},
} as ModelErrorDefinition;
// if (this.operator !== Operator.NOT && typeof this.attr1.attr1 !== "string")
// return {
// attr1: {
// condition: stringFormat("Parent condition attribute must be a string")
// }
// } as ModelErrorDefinition
}
}
/**
* @summary Joins 2 {@link Condition}s on an {@link Operator#AND} operation
* @param {Condition} condition1
* @param {Condition} condition2
*/
static and<M extends Model>(
condition1: Condition<M>,
condition2: Condition<M>
): Condition<M> {
return Condition.group(condition1, GroupOperator.AND, condition2);
}
/**
* @summary Joins 2 {@link Condition}s on an {@link Operator#OR} operation
* @param {Condition} condition1
* @param {Condition} condition2
*/
static or<M extends Model>(
condition1: Condition<M>,
condition2: Condition<M>
): Condition<M> {
return Condition.group(condition1, GroupOperator.OR, condition2);
}
/**
* @summary Groups 2 {@link Condition}s by the specified {@link GroupOperator}
* @param {Condition} condition1
* @param {GroupOperator} operator
* @param {Condition} condition2
*/
private static group<M extends Model>(
condition1: Condition<M>,
operator: GroupOperator,
condition2: Condition<M>
): Condition<M> {
return new Condition(condition1, operator, condition2);
}
static attribute<M extends Model>(attr: keyof M) {
return new Condition.Builder<M>().attribute(attr);
}
static attr<M extends Model>(attr: keyof M) {
return this.attribute(attr);
}
/**
* @summary Condition Builder Class
* @description provides a simple API to build {@link Condition}s
*
* @class ConditionBuilder
* @implements Builder
* @implements AttributeOption
*
* @category Query
* @subcategory Conditions
*/
private static Builder = class ConditionBuilder<M extends Model>
implements ConditionBuilderOption<M>, AttributeOption<M>
{
attr1?: keyof M | Condition<M> = undefined;
operator?: Operator | GroupOperator = undefined;
comparison?: any = undefined;
/**
* @inheritDoc
*/
attribute(attr: keyof M): AttributeOption<M> {
this.attr1 = attr;
return this;
}
attr(attr: keyof M) {
return this.attribute(attr);
}
/**
* @summary Creates an Equality Comparison
* @param {any} val
*/
eq(val: any) {
return this.setOp(Operator.EQUAL, val);
}
/**
* @summary Creates a Different Comparison
* @param {any} val
*/
dif(val: any) {
return this.setOp(Operator.DIFFERENT, val);
}
/**
* @summary Creates a Greater Than Comparison
* @param {any} val
*/
gt(val: any) {
return this.setOp(Operator.BIGGER, val);
}
/**
* @summary Creates a Lower Than Comparison
* @param {any} val
*/
lt(val: any) {
return this.setOp(Operator.SMALLER, val);
}
/**
* @summary Creates a Greater or Equal to Comparison
* @param {any} val
*/
gte(val: any) {
return this.setOp(Operator.BIGGER_EQ, val);
}
/**
* @summary Creates a Lower or Equal to Comparison
* @param {any} val
*/
lte(val: any) {
return this.setOp(Operator.SMALLER_EQ, val);
}
in(arr: any[]) {
return this.setOp(Operator.IN, arr);
}
/**
* @summary Creates a Regexpo Comparison
* @param {any} val
*/
regexp(val: any) {
return this.setOp(Operator.REGEXP, new RegExp(val).source);
}
/**
* @summary Creates an {@link Operator} based Comparison
* @param {Operator} op
* @param {any} val
*/
private setOp(op: Operator, val: any) {
this.operator = op;
this.comparison = val;
return this.build();
}
/**
* @summary Builds the Database Object
* @throws {QueryError} if it fails to build the {@link Condition}
* @private
*/
private build(): Condition<M> {
try {
return new Condition(
this.attr1 as string | Condition<M>,
this.operator as Operator,
this.comparison as any
);
} catch (e: any) {
throw new QueryError(e);
}
}
};
static builder<M extends Model>(): ConditionBuilderOption<M> {
return new Condition.Builder<M>();
}
}
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