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Tensorics is a java framework which uses a tensor as a central object. A tensor represents a set of values placed in an N-dimensional space. Wherever you are tempted to use maps of maps, a tensor might be a good choice ;-) Tensorics provides methods to create, transform and performing calculations with those tensors.
// @formatter:off
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*
* This file is part of tensorics.
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* Copyright (c) 2008-2011, CERN. All rights reserved.
*
* 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
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package org.tensorics.core.tensor.lang;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import java.util.Map.Entry;
import java.util.Set;
import org.tensorics.core.tensor.ImmutableTensor;
import org.tensorics.core.tensor.ImmutableTensor.Builder;
import org.tensorics.core.tensor.Position;
import org.tensorics.core.tensor.Tensor;
import com.google.common.base.Preconditions;
public class OngoingCompletion {
private final Tensor tensor;
OngoingCompletion(Tensor tensor) {
this.tensor = Preconditions.checkNotNull(tensor, "tensor must not be null");
}
public Tensor with(Tensor second) {
checkNotNull(second, "second tensor must not be null");
checkArgument(second.shape().dimensionSet().equals(dimensions()),
"Tensors do not have the same dimensions! Completion not supported!");
Builder builder = ImmutableTensor.builder(dimensions());
builder.setTensorContext(tensor.context());
for (Entry entry: second.asMap().entrySet()) {
Position position = entry.getKey();
if (tensor.shape().contains(position)) {
builder.putAt(tensor.get(position), position);
} else {
builder.put(entry);
}
}
return builder.build();
}
private Set> dimensions() {
return tensor.shape().dimensionSet();
}
}