Not able to import com.bigchaindb.cryptoconditions.types.Ed25519Sha256Condition Package

[sourabhlodha]

Hi Team,

I am trying to implement the java-bigchaindb but I am not able to send the transcation as it give error while importing package
com.bigchaindb.cryptoconditions.types.Ed25519Sha256Condition;

Can you help me out as its by default package of bigchaindb

Thanks
Sourabh Lodha

[innopreneur]

@sourabhlodha can you please paste error stacktrace here. Also specify which driver version you are using? And are you using raw jar file or via maven or gradle?

[sourabhlodha]

@innoprenuer I am using the same project with 1.0 version of the driver.
Error

Exception in thread "main" java.lang.Error: Unresolved compilation problems:
Ed25519Sha256Condition cannot be resolved to a type
Ed25519Sha256Condition cannot be resolved to a type

at com.bigchaindb.builders.BigchainDbTransactionBuilder$Builder.addOutput(BigchainDbTransactionBuilder.java:264)
at com.bigchaindb.builders.BigchainDbTransactionBuilder$Builder.addOutput(BigchainDbTransactionBuilder.java:257)
at com.bigchaindb.builders.BigchainDbTransactionBuilder$Builder.addOutput(BigchainDbTransactionBuilder.java:251)
at com.bigchaindb.builders.BigchainDbTransactionBuilder$Builder.build(BigchainDbTransactionBuilder.java:353)
at com.bigchaindb.builders.BigchainDbTransactionBuilder$Builder.buildAndSign(BigchainDbTransactionBuilder.java:446)
at com.bigchaindb.builders.BigChainDBTest.main(BigChainDBTest.java:48)

Code

BigchainDbConfigBuilder
.baseUrl("http://ip:9984")
.setup();
net.i2p.crypto.eddsa.KeyPairGenerator edDsaKpg = new net.i2p.crypto.eddsa.KeyPairGenerator();
KeyPair keyPair = edDsaKpg.generateKeyPair();

	// New asset
	Map<String, String> assetData = new TreeMap<String, String>() {{
	    put("city", "Berlin, DE");
	    put("temperature", "22");
	    put("datetime", new Date().toString());
	}};

	// New metadata
	MetaData metaData = new MetaData();
	metaData.setMetaData("what", "My first BigchainDB transaction");
	Transaction createTransaction = BigchainDbTransactionBuilder
			.init()
			.addAssets(assetData, TreeMap.class)
			.addMetaData(metaData)
			.operation(Operations.CREATE)
			.buildAndSign((EdDSAPublicKey) keyPair.getPublic(), (EdDSAPrivateKey) keyPair.getPrivate()) //Facing error in this line
			.sendTransaction();
	KeyPair targetKeypair = edDsaKpg.generateKeyPair();

	// Describe the output you are fulfilling on the previous transaction
	final FulFill spendFrom = new FulFill();
	spendFrom.setTransactionId(createTransaction.getId());
	spendFrom.setOutputIndex(0);

	// Change the metadata if you want
	MetaData transferMetadata = new MetaData();
	metaData.setMetaData("what2", "My first BigchainDB transaction");

	// the asset's ID is equal to the ID of the transaction that created it
	String assetId = createTransaction.getId();

	// By default, the 'amount' of a created digital asset == "1". So we spend "1" in our TRANSFER.
	String amount = "1";

	// Use the previous transaction's asset and TRANSFER it
	Transaction transferTransaction = BigchainDbTransactionBuilder
		.init()
		.addMetaData(metaData)

		// source keypair is used in the input, because the current owner is "spending" the output to transfer it
		.addInput(null, spendFrom, (EdDSAPublicKey) keyPair.getPublic())

		// after this transaction, the target 'owns' the asset, so, the new output includes the target's public key
		.addOutput(output, (EdDSAPublicKey) targetKeypair.getPublic())

		// reference the asset by ID when doing a transfer
		.addAssets(assetId, String.class)
		.operation(Operations.TRANSFER)

		// the source key signs the transaction to authorize the transfer
		.buildAndSign((EdDSAPublicKey) keyPair.getPublic(), (EdDSAPrivateKey) keyPair.getPrivate())
		.sendTransaction();

[sourabhlodha]

@innoprenuer Can you help me out in giving simple working.