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CqlVector.java
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CqlVector.java
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/*
* Copyright (c) 2023 nosqlbench
*
* 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 io.nosqlbench.datamappers.functions.to_cqlvector;
import io.nosqlbench.virtdata.api.annotations.Categories;
import io.nosqlbench.virtdata.api.annotations.Category;
import io.nosqlbench.virtdata.api.annotations.Example;
import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;
import io.nosqlbench.virtdata.api.bindings.VirtDataConversions;
import java.util.List;
import java.util.function.LongFunction;
/**
* Create a new CqlVector from a composed function, where the inner function
* is a list generation function that must take a long (cycle) input.
*/
@ThreadSafeMapper
@Categories(Category.HOF)
public class CqlVector implements LongFunction<com.datastax.oss.driver.api.core.data.CqlVector> {
private final LongFunction<List<?>> func;
@Example({"CqlVector(ListSized(2,HashedRange(0.2f, 5.0f)", "Create a 2-component vector with the given range of values."})
public CqlVector(Object func) {
this.func = VirtDataConversions.adaptFunction(func, LongFunction.class, List.class);
}
@Override
public com.datastax.oss.driver.api.core.data.CqlVector apply(long cycle) {
List components = func.apply(cycle);
com.datastax.oss.driver.api.core.data.CqlVector vector = com.datastax.oss.driver.api.core.data.CqlVector.newInstance(components);
return vector;
}
}