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Hedera™ Hashgraph SDK for Java
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/*-
*
* Hedera Java SDK
*
* Copyright (C) 2020 - 2024 Hedera Hashgraph, LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.hedera.hashgraph.sdk;
import com.google.protobuf.InvalidProtocolBufferException;
import com.hedera.hashgraph.sdk.proto.FileID;
import javax.annotation.Nonnegative;
import javax.annotation.Nullable;
import java.util.Objects;
/**
* The ID for a file on Hedera.
*/
public final class FileId implements Comparable {
/**
* The public node address book for the current network.
*/
public static final FileId ADDRESS_BOOK = new FileId(0, 0, 102);
/**
* The current fee schedule for the network.
*/
public static final FileId FEE_SCHEDULE = new FileId(0, 0, 111);
/**
* The current exchange rate of HBAR to USD.
*/
public static final FileId EXCHANGE_RATES = new FileId(0, 0, 112);
/**
* The shard number
*/
@Nonnegative
public final long shard;
/**
* The realm number
*/
@Nonnegative
public final long realm;
/**
* The id number
*/
@Nonnegative
public final long num;
@Nullable
private final String checksum;
/**
* Assign the num portion of the file id.
*
* @param num the num portion not negative
*/
public FileId(@Nonnegative long num) {
this(0, 0, num);
}
/**
* Assign the file id.
*
* @param shard the shard portion
* @param realm the realm portion
* @param num the num portion
*/
@SuppressWarnings("InconsistentOverloads")
public FileId(@Nonnegative long shard, @Nonnegative long realm, @Nonnegative long num) {
this(shard, realm, num, null);
}
/**
* Assign the file id and optional checksum.
*
* @param shard the shard portion
* @param realm the realm portion
* @param num the num portion
* @param checksum the optional checksum
*/
@SuppressWarnings("InconsistentOverloads")
FileId(@Nonnegative long shard, @Nonnegative long realm, @Nonnegative long num, @Nullable String checksum) {
this.shard = shard;
this.realm = realm;
this.num = num;
this.checksum = checksum;
}
/**
* Assign the file id from a string.
*
* @param id the string representation of a file id
* @return the file id object
*/
public static FileId fromString(String id) {
return EntityIdHelper.fromString(id, FileId::new);
}
/**
* Assign the file id from a byte array.
*
* @param bytes the byte array representation of a file id
* @return the file id object
* @throws InvalidProtocolBufferException when there is an issue with the protobuf
*/
public static FileId fromBytes(byte[] bytes) throws InvalidProtocolBufferException {
return fromProtobuf(FileID.parseFrom(bytes).toBuilder().build());
}
/**
* Create a file id object from a protobuf.
*
* @param fileId the protobuf
* @return the file id object
*/
static FileId fromProtobuf(FileID fileId) {
Objects.requireNonNull(fileId);
return new FileId(fileId.getShardNum(), fileId.getRealmNum(), fileId.getFileNum());
}
/**
* Create a file id object from a solidity address.
*
* @param address the solidity address
* @return the file id object
*/
public static FileId fromSolidityAddress(String address) {
return EntityIdHelper.fromSolidityAddress(address, FileId::new);
}
/**
* Extract the string representation of file id.
*
* @return the string representation of file id
*/
public String toSolidityAddress() {
return EntityIdHelper.toSolidityAddress(shard, realm, num);
}
/**
* @return protobuf representing the file id
*/
FileID toProtobuf() {
return FileID.newBuilder()
.setShardNum(shard)
.setRealmNum(realm)
.setFileNum(num)
.build();
}
/**
* @param client to validate against
* @throws BadEntityIdException if entity ID is formatted poorly
* @deprecated Use {@link #validateChecksum(Client)} instead.
*/
@Deprecated
public void validate(Client client) throws BadEntityIdException {
validateChecksum(client);
}
/**
* Validate that the client is configured correctly.
*
* @param client the client to validate
* @throws BadEntityIdException if entity ID is formatted poorly
*/
public void validateChecksum(Client client) throws BadEntityIdException {
EntityIdHelper.validate(shard, realm, num, client, checksum);
}
/**
* Extract the checksum.
*
* @return the checksum
*/
@Nullable
public String getChecksum() {
return checksum;
}
/**
* Create the byte array.
*
* @return byte array representation
*/
public byte[] toBytes() {
return toProtobuf().toByteArray();
}
@Override
public String toString() {
return EntityIdHelper.toString(shard, realm, num);
}
/**
* Convert the client to a string representation with a checksum.
*
* @param client the client to stringify
* @return string representation with checksum
*/
public String toStringWithChecksum(Client client) {
return EntityIdHelper.toStringWithChecksum(shard, realm, num, client, checksum);
}
@Override
public int hashCode() {
return Objects.hash(shard, realm, num);
}
@Override
public boolean equals( Object o) {
if (this == o) {
return true;
}
if (!(o instanceof FileId)) {
return false;
}
FileId otherId = (FileId) o;
return shard == otherId.shard && realm == otherId.realm && num == otherId.num;
}
@Override
public int compareTo(FileId o) {
Objects.requireNonNull(o);
int shardComparison = Long.compare(shard, o.shard);
if (shardComparison != 0) {
return shardComparison;
}
int realmComparison = Long.compare(realm, o.realm);
if (realmComparison != 0) {
return realmComparison;
}
return Long.compare(num, o.num);
}
}