133 lines
3.0 KiB
Java
133 lines
3.0 KiB
Java
package it.cavallium.dbengine.database;
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import io.net5.buffer.api.Buffer;
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import io.net5.buffer.api.Drop;
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import io.net5.buffer.api.Owned;
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import io.net5.buffer.api.Send;
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import io.net5.buffer.api.internal.ResourceSupport;
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import java.util.StringJoiner;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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public class LLEntry extends LiveResourceSupport<LLEntry, LLEntry> {
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@NotNull
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private final Buffer key;
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@NotNull
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private final Buffer value;
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private LLEntry(@NotNull Send<Buffer> key, @NotNull Send<Buffer> value, Drop<LLEntry> drop) {
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super(new LLEntry.CloseOnDrop(drop));
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this.key = key.receive().makeReadOnly();
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this.value = value.receive().makeReadOnly();
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assert isAllAccessible();
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}
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private boolean isAllAccessible() {
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assert key.isAccessible();
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assert value.isAccessible();
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assert this.isAccessible();
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assert this.isOwned();
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return true;
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}
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public static LLEntry of(@NotNull Send<Buffer> key, @NotNull Send<Buffer> value) {
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return new LLEntry(key, value, d -> {});
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}
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public Send<Buffer> getKey() {
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ensureOwned();
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return key.copy().send();
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}
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public Buffer getKeyUnsafe() {
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return key;
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}
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public Send<Buffer> getValue() {
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ensureOwned();
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return value.copy().send();
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}
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public Buffer getValueUnsafe() {
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return value;
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}
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private void ensureOwned() {
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assert isAllAccessible();
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if (!isOwned()) {
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if (!isAccessible()) {
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throw this.createResourceClosedException();
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} else {
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throw new IllegalStateException("Resource not owned");
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}
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}
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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LLEntry LLEntry = (LLEntry) o;
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return LLUtils.equals(key, LLEntry.key) && LLUtils.equals(value, LLEntry.value);
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}
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@Override
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public int hashCode() {
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int result = LLUtils.hashCode(key);
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result = 31 * result + LLUtils.hashCode(value);
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return result;
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}
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@Override
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public String toString() {
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return new StringJoiner(", ", LLEntry.class.getSimpleName() + "[", "]")
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.add("key=" + LLUtils.toString(key))
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.add("value=" + LLUtils.toString(value))
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.toString();
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}
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public LLEntry copy() {
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ensureOwned();
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return new LLEntry(key.copy().send(), value.copy().send(), d -> {});
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}
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@Override
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protected RuntimeException createResourceClosedException() {
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return new IllegalStateException("Closed");
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}
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@Override
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protected Owned<LLEntry> prepareSend() {
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Send<Buffer> keySend;
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Send<Buffer> valueSend;
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keySend = this.key.send();
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valueSend = this.value.send();
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return drop -> new LLEntry(keySend, valueSend, drop);
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}
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private static class CloseOnDrop implements Drop<LLEntry> {
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private final Drop<LLEntry> delegate;
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public CloseOnDrop(Drop<LLEntry> drop) {
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this.delegate = drop;
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}
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@Override
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public void drop(LLEntry obj) {
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if (obj.key.isAccessible()) {
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obj.key.close();
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}
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if (obj.value.isAccessible()) {
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obj.value.close();
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}
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delegate.drop(obj);
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}
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}
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}
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