Added the node inside the stores

io-hotmoka-node-disk/src/main/java/io/hotmoka/node/disk/internal/DiskNodeImpl.java

@@ -81,7 +81,7 @@ public DiskNodeConfig getLocalConfig() {
 
 	@Override
 	protected DiskStore mkStore() {
-		return new DiskStore(getLocalConfig().getDir());
+		return new DiskStore(this);
 	}
 
 	@Override

io-hotmoka-node-disk/src/main/java/io/hotmoka/node/disk/internal/DiskStore.java

@@ -47,7 +47,7 @@
  * while the histories are kept in RAM.
  */
 @Immutable
-class DiskStore extends AbstractStore<DiskStore> {
+class DiskStore extends AbstractStore<DiskStore, DiskNodeImpl> {
 
 	/**
 	 * The path where the database of the store gets created.
@@ -80,8 +80,10 @@ class DiskStore extends AbstractStore<DiskStore> {
      * 
 	 * @param dir the path where the database of the store gets created
      */
-    DiskStore(Path dir) {
-    	this.dir = dir;
+    DiskStore(DiskNodeImpl node) {
+    	super(node);
+
+    	this.dir = node.getLocalConfig().getDir();
     	this.requests = new ConcurrentHashMap<>();
     	this.responses = new ConcurrentHashMap<>();
     	this.histories = new ConcurrentHashMap<>();

io-hotmoka-node-local/src/main/java/io/hotmoka/node/local/AbstractStore.java

@@ -21,28 +21,39 @@
 import io.hotmoka.node.local.api.EngineClassLoader;
 import io.hotmoka.node.local.api.Store;
 
-public abstract class AbstractStore<T extends AbstractStore<T>> implements Store<T> {
+public abstract class AbstractStore<T extends AbstractStore<T, N>, N extends AbstractLocalNode<?, T>> implements Store<T> {
 
 	/**
 	 * Cached recent requests that have had their signature checked.
 	 * This can be shared across distinct stores since valid signatures
 	 * remain valid over time.
 	 */
-	final LRUCache<SignedTransactionRequest<?>, Boolean> checkedSignatures;
+	final LRUCache<SignedTransactionRequest<?>, Boolean> checkedSignatures; // TODO: possibly store by reference
 
 	/**
 	 * The cache for the class loaders. This can be shared across distinct stores since
 	 * jars installed in store remain valid over time.
 	 */
 	final LRUCache<TransactionReference, EngineClassLoader> classLoaders;
 
-	protected AbstractStore() {
+	/**
+	 * The node having this store.
+	 */
+	private final N node;
+
+	protected AbstractStore(N node) {
+		this.node = node;
 		this.checkedSignatures = new LRUCache<>(100, 1000);
 		this.classLoaders = new LRUCache<>(100, 1000);
 	}
 
-	protected AbstractStore(AbstractStore<T> toClone) {
+	protected AbstractStore(AbstractStore<T, N> toClone) {
+		this.node = toClone.node;
 		this.checkedSignatures = toClone.checkedSignatures;
 		this.classLoaders = toClone.classLoaders;
 	}
+
+	protected final N getNode() {
+		return node;
+	}
 }

io-hotmoka-node-local/src/main/java/io/hotmoka/node/local/AbstractStoreTransaction.java

@@ -65,7 +65,7 @@
  * its hash is held in the node, if consensus is needed. Stores must be thread-safe, since they can
  * be used concurrently for executing more requests.
  */
-public abstract class AbstractStoreTransaction<T extends AbstractStore<T>> implements StoreTransaction<T> {
+public abstract class AbstractStoreTransaction<T extends AbstractStore<T, ?>> implements StoreTransaction<T> {
 	private final static Logger LOGGER = Logger.getLogger(AbstractStoreTransaction.class.getName());
 	private final T store;
 

io-hotmoka-node-local/src/main/java/io/hotmoka/node/local/AbstractTrieBasedStore.java

@@ -16,7 +16,6 @@
 
 package io.hotmoka.node.local;
 
-import java.nio.file.Path;
 import java.util.Optional;
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.stream.Stream;
@@ -62,7 +61,7 @@
  * This class is meant to be subclassed by specifying where errors, requests and histories are kept.
  */
 @Immutable
-public abstract class AbstractTrieBasedStore<T extends AbstractTrieBasedStore<T>> extends AbstractStore<T> {
+public abstract class AbstractTrieBasedStore<T extends AbstractTrieBasedStore<T, N>, N extends AbstractLocalNode<?, T>> extends AbstractStore<T, N> {
 
 	/**
 	 * The Xodus environment that holds the store.
@@ -131,8 +130,10 @@ public abstract class AbstractTrieBasedStore<T extends AbstractTrieBasedStore<T>
 	 * 
  	 * @param dir the path where the database of the store is kept
 	 */
-    protected AbstractTrieBasedStore(Path dir) {
-    	this.env = new Environment(dir + "/store");
+    protected AbstractTrieBasedStore(N node) {
+    	super(node);
+
+    	this.env = new Environment(node.getLocalNodeConfig().getDir() + "/store");
 
 		var storeOfInfo = new AtomicReference<io.hotmoka.xodus.env.Store>();
 		var roots = new AtomicReference<Optional<byte[]>>();
@@ -192,7 +193,7 @@ protected AbstractTrieBasedStore(Path dir) {
     	}
     }
 
-    protected AbstractTrieBasedStore(AbstractTrieBasedStore<T> toClone) {
+    protected AbstractTrieBasedStore(AbstractTrieBasedStore<T, N> toClone) {
     	super(toClone);
 
     	this.env = toClone.env;
@@ -208,7 +209,7 @@ protected AbstractTrieBasedStore(AbstractTrieBasedStore<T> toClone) {
     	this.rootOfRequests = toClone.rootOfRequests;
     }
 
-    protected AbstractTrieBasedStore(AbstractTrieBasedStore<T> toClone, Optional<byte[]> rootOfResponses, Optional<byte[]> rootOfInfo, Optional<byte[]> rootOfErrors, Optional<byte[]> rootOfHistories, Optional<byte[]> rootOfRequests) {
+    protected AbstractTrieBasedStore(AbstractTrieBasedStore<T, N> toClone, Optional<byte[]> rootOfResponses, Optional<byte[]> rootOfInfo, Optional<byte[]> rootOfErrors, Optional<byte[]> rootOfHistories, Optional<byte[]> rootOfRequests) {
     	super(toClone);
 
     	this.env = toClone.env;

io-hotmoka-node-local/src/main/java/io/hotmoka/node/local/AbstractTrieBasedStoreTransaction.java

@@ -17,7 +17,7 @@
 import io.hotmoka.xodus.ExodusException;
 import io.hotmoka.xodus.env.Transaction;
 
-public abstract class AbstractTrieBasedStoreTransaction<T extends AbstractTrieBasedStore<T>> extends AbstractStoreTransaction<T> {
+public abstract class AbstractTrieBasedStoreTransaction<T extends AbstractTrieBasedStore<T, ?>> extends AbstractStoreTransaction<T> {
 
 	/**
 	 * The Xodus transaction where the updates get recorded.

io-hotmoka-node-tendermint/src/main/java/io/hotmoka/node/tendermint/internal/TendermintNodeImpl.java

@@ -229,7 +229,7 @@ public TendermintPoster getPoster() {
 
 	@Override
 	protected TendermintStore mkStore() {
-		return new TendermintStore(config.getDir(), this);
+		return new TendermintStore(this);
 	}
 
 	@Override

io-hotmoka-node-tendermint/src/main/java/io/hotmoka/node/tendermint/internal/TendermintStore.java

@@ -16,7 +16,6 @@
 
 package io.hotmoka.node.tendermint.internal;
 
-import java.nio.file.Path;
 import java.security.NoSuchAlgorithmException;
 import java.util.Optional;
 import java.util.function.Function;
@@ -35,12 +34,7 @@
  * Tendermint, since it keeps such information inside its blocks.
  */
 @Immutable
-public class TendermintStore extends AbstractTrieBasedStore<TendermintStore> {
-
-	/**
-	 * An object that can be used to send post requests to Tendermint
-	 */
-	private final TendermintNodeImpl node;
+public class TendermintStore extends AbstractTrieBasedStore<TendermintStore, TendermintNodeImpl> {
 
 	/**
 	 * The hasher used to merge the hashes of the many tries.
@@ -51,13 +45,10 @@ public class TendermintStore extends AbstractTrieBasedStore<TendermintStore> {
      * Creates a store for the Tendermint blockchain.
      * It is initialized to the view of the last checked out root.
      * 
-	 * @param dir the path where the database of the store gets created
      * @param node an object that can be used to send post requests to Tendermint
      */
-    TendermintStore(Path dir, TendermintNodeImpl node) {
-    	super(dir);
-
-    	this.node = node;
+    TendermintStore(TendermintNodeImpl node) {
+    	super(node);
 
     	try {
     		this.hasherOfHashes = HashingAlgorithms.sha256().getHasher(Function.identity());
@@ -70,20 +61,19 @@ public class TendermintStore extends AbstractTrieBasedStore<TendermintStore> {
     private TendermintStore(TendermintStore toClone, Optional<byte[]> rootOfResponses, Optional<byte[]> rootOfInfo, Optional<byte[]> rootOfErrors, Optional<byte[]> rootOfHistories, Optional<byte[]> rootOfRequests) {
     	super(toClone, rootOfResponses, rootOfInfo, rootOfErrors, rootOfHistories, rootOfRequests);
 
-    	this.node = toClone.node;
     	this.hasherOfHashes = toClone.hasherOfHashes;
 	}
 
 	@Override
 	public Optional<String> getError(TransactionReference reference) {
     	// error messages are held inside the Tendermint blockchain
-    	return node.getPoster().getErrorMessage(reference.getHash());
+    	return getNode().getPoster().getErrorMessage(reference.getHash());
 	}
 
 	@Override
 	public Optional<TransactionRequest<?>> getRequest(TransactionReference reference) {
 		// requests are held inside the Tendermint blockchain
-		return node.getPoster().getRequest(reference.getHash());
+		return getNode().getPoster().getRequest(reference.getHash());
 	}
 
 	/**