mapping.ts

import { Address, BigInt, Bytes, log, store } from '@graphprotocol/graph-ts';
import { ExampleContract, ExampleEvent } from './types/ExampleSubgraph/ExampleContract';
import { ExampleEntity } from './types/schema';

export function handleExampleEvent(event: ExampleEvent): void {
  const entity = new ExampleEntity('example id');

  // Entity field access

  entity.optionalBoolean = true;
  entity.optionalBoolean = false;
  entity.optionalBooleanList = [true, false];
  entity.optionalBooleanList = null;

  const optionalBoolean: boolean = entity.optionalBoolean;
  const optionalBooleanList: Array<boolean> | null = entity.optionalBooleanList;

  entity.requiredBoolean = true;
  entity.requiredBoolean = false;
  entity.requiredBooleanList = [true, false];

  const requiredBoolean: boolean = entity.requiredBoolean;
  const requiredBooleanList: Array<boolean> = entity.requiredBooleanList;

  entity.optionalString = 'hello';
  entity.optionalString = null;
  entity.optionalStringList = ['hello', 'world'];
  entity.optionalStringList = null;

  const optionalString: string | null = entity.optionalString;
  const optionalStringList: Array<string> | null = entity.optionalStringList;

  entity.requiredString = 'hello';
  entity.requiredStringList = ['hello', 'world'];

  const requiredString: string = entity.requiredString;
  const requiredStringList: Array<string> = entity.requiredStringList;

  entity.optionalInt = 128;
  entity.optionalInt = -500;
  entity.optionalInt = null;
  entity.optionalIntList = [128, -500];
  entity.optionalIntList = null;

  const optionalInt: i32 = entity.optionalInt;
  const optionalIntList: Array<i32> | null = entity.optionalIntList;

  entity.requiredInt = 128;
  entity.requiredInt = -500;
  entity.requiredIntList = [128, -500];

  const requiredInt: i32 = entity.requiredInt;
  const requiredIntList: Array<i32> = entity.requiredIntList;

  entity.optionalBigInt = new BigInt(0);
  entity.optionalBigInt = null;
  entity.optionalBigIntList = [new BigInt(0), new BigInt(0)];
  entity.optionalBigIntList = null;

  const optionalBigInt: BigInt | null = entity.optionalBigInt;
  const optionalBigIntList: Array<BigInt> | null = entity.optionalBigIntList;

  entity.requiredBigInt = new BigInt(0);
  entity.requiredBigIntList = [new BigInt(0), new BigInt(0)];

  const requiredBigInt: BigInt = entity.requiredBigInt;
  const requiredBigIntList: Array<BigInt> = entity.requiredBigIntList;

  entity.optionalBytes = new Bytes(0);
  entity.optionalBytes = null;
  entity.optionalBytesList = [new Bytes(0), new Bytes(0)];
  entity.optionalBytesList = null;

  const optionalBytes: Bytes | null = entity.optionalBytes;
  const optionalBytesList: Array<Bytes> | null = entity.optionalBytesList;

  entity.requiredBytes = new Bytes(0);
  entity.requiredBytesList = [new Bytes(0), new Bytes(0)];

  const requiredBytes: Bytes = entity.requiredBytes;
  const requiredBytesList: Array<Bytes> = entity.requiredBytesList;

  entity.optionalReference = 'some-id';
  entity.optionalReference = null;
  entity.optionalReferenceList = ['some-id', 'other-id'];
  entity.optionalReferenceList = null;

  const optionalReference: string | null = entity.optionalReference;
  const optionalReferenceList: Array<string> | null = entity.optionalReferenceList;

  entity.requiredReference = 'some-id';
  entity.requiredReferenceList = ['some-id', 'other-id'];

  const requiredReference: string = entity.requiredReference;
  const requiredReferenceList: Array<string> = entity.requiredReferenceList;

  // Smart contract calls

  const contract = ExampleContract.bind(event.address);
  entity.requiredBytes = contract.getAndReturnAddress(entity.requiredBytes as Address);
  entity.requiredString = contract.getAndReturnString(entity.requiredString);
  entity.requiredBoolean = contract.getAndReturnBool(entity.requiredBoolean);
  entity.requiredBytes = contract.getAndReturnByte(entity.requiredBytes);
  entity.requiredBytes = contract.getAndReturnBytes1(entity.requiredBytes);
  entity.requiredBytes = contract.getAndReturnBytes32(entity.requiredBytes);
  entity.requiredInt = contract.getAndReturnInt8(entity.requiredInt);
  entity.requiredInt = contract.getAndReturnInt16(entity.requiredInt);
  entity.requiredInt = contract.getAndReturnInt24(entity.requiredInt);
  entity.requiredInt = contract.getAndReturnInt32(entity.requiredInt);
  entity.requiredBigInt = contract.getAndReturnInt40(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt56(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt64(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt72(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt80(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt88(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt96(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt104(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt112(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt120(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt128(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt136(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt144(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt152(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt160(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt168(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt176(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt184(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt192(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt200(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt200(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt208(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt216(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt224(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt232(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt240(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt248(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnInt256(entity.requiredBigInt);
  entity.requiredInt = contract.getAndReturnUint8(entity.requiredInt);
  entity.requiredInt = contract.getAndReturnUint16(entity.requiredInt);
  entity.requiredInt = contract.getAndReturnUint24(entity.requiredInt);
  entity.requiredBigInt = contract.getAndReturnUint32(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint40(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint56(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint64(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint72(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint80(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint88(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint96(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint104(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint112(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint120(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint128(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint136(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint144(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint152(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint160(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint168(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint176(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint184(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint192(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint200(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint200(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint208(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint216(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint224(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint232(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint240(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint248(entity.requiredBigInt);
  entity.requiredBigInt = contract.getAndReturnUint256(entity.requiredBigInt);

  const addrArray: Array<Address> = contract.getAndReturnAddressArray([
    new Address(0),
    new Address(0),
  ]);
  entity.requiredStringList = contract.getAndReturnStringArray(entity.requiredStringList);
  entity.requiredBooleanList = contract.getAndReturnBoolArray(entity.requiredBooleanList);
  entity.requiredBytesList = contract.getAndReturnByteArray(entity.requiredBytesList);
  entity.requiredBytesList = contract.getAndReturnBytes1Array(entity.requiredBytesList);
  entity.requiredBytesList = contract.getAndReturnBytes32Array(entity.requiredBytesList);
  entity.requiredIntList = contract.getAndReturnInt8Array(entity.requiredIntList);
  entity.requiredIntList = contract.getAndReturnInt16Array(entity.requiredIntList);
  entity.requiredIntList = contract.getAndReturnInt24Array(entity.requiredIntList);
  contract.getAndReturnInt32Array(entity.requiredIntList);
  entity.requiredBigIntList = contract.getAndReturnInt40Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt56Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt64Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt72Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt80Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt88Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt96Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt104Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt112Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt120Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt128Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt136Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt144Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt152Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt160Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt168Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt176Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt184Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt192Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt200Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt200Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt208Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt216Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt224Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt232Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt240Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt248Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnInt256Array(entity.requiredBigIntList);
  const u8Array: Array<i32> = contract.getAndReturnUint8Array([1 as i32, 100 as i32]);
  const u16Array: Array<i32> = contract.getAndReturnUint16Array([1 as i32, 100 as i32]);
  const u24Array: Array<i32> = contract.getAndReturnUint24Array([1 as i32, 100 as i32]);
  const u32Array: Array<BigInt> = contract.getAndReturnUint32Array([new BigInt(0), new BigInt(0)]);
  entity.requiredBigIntList = contract.getAndReturnUint40Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint56Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint64Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint72Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint80Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint88Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint96Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint104Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint112Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint120Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint128Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint136Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint144Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint152Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint160Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint168Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint176Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint184Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint192Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint200Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint200Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint208Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint216Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint224Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint232Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint240Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint248Array(entity.requiredBigIntList);
  entity.requiredBigIntList = contract.getAndReturnUint256Array(entity.requiredBigIntList);

  // Store access

  store.set('ExampleEntity', 'example id', entity);
  store.get('ExampleEntity', 'example id');
  store.remove('ExampleEntity', 'example id');

  // Entity load and save (using the store behind the scenes)
  entity.save();
  let other = ExampleEntity.load('other example id');
  if (other == null) {
    other = new ExampleEntity('other example id');
  }
  other.save();

  // BigInt math
  const bigIntPlus = entity.requiredBigInt + entity.requiredBigInt;
  const bigIntMinus = entity.requiredBigInt - entity.requiredBigInt;
  const bigIntTimes = entity.requiredBigInt * entity.requiredBigInt;
  const bigIntDividedBy = entity.requiredBigInt / entity.requiredBigInt;
  const bigIntMod = entity.requiredBigInt % entity.requiredBigInt;

  // Logging
  log.debug('Hello {}', ['World']);
  log.info('Hello {}', ['World']);
  log.warning('Hello {}', ['World']);
  log.error('Hello {}', ['World']);
  log.critical('Hello {}', ['World']);
}