MCP SQL Server

/** * QueryString Value Object * * Encapsulates SQL query string with validation and query type identification capabilities. */ export class QueryString { private readonly _value: string; constructor(value: string) { if (!value || value.trim().length === 0) { throw new Error('Query string cannot be empty'); } this._value = value.trim(); } get value(): string { return this._value; } isSelect(): boolean { return this._value.toLowerCase().startsWith('select'); } isModifying(): boolean { const lowerValue = this._value.toLowerCase(); return ( lowerValue.startsWith('insert') || lowerValue.startsWith('update') || lowerValue.startsWith('delete') ); } isStoredProcedure(): boolean { return ( this._value.toLowerCase().startsWith('exec') || this._value.toLowerCase().startsWith('execute') ); } toString(): string { return this._value; } }