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package io.virtdata.libbasics.shared.stateful.from_long;

import io.virtdata.annotations.Categories;
import io.virtdata.annotations.Category;
import io.virtdata.annotations.Example;
import io.virtdata.annotations.ThreadSafeMapper;
import io.virtdata.libbasics.core.threadstate.SharedState;

import java.util.HashMap;
import java.util.function.LongFunction;

/**
 * Save a value to a named thread-local variable, where the variable
 * name is fixed or a generated variable name from a provided function.
 * Note that the input type is not that suitable for constructing names,
 * so this is more likely to be used in an indirect naming pattern like
 * 
SaveDouble(Load('id'))
*/ @Categories(Category.state) @ThreadSafeMapper public class SaveFloat implements LongFunction { private final String name; private final LongFunction nameFunc; @Example({"SaveFloat('foo')","save the current float value to a named variable in this thread."}) public SaveFloat(String name) { this.name = name; this.nameFunc=null; } @Example({"SaveFloat(NumberNameToString())","save the current float value to a named variable in this thread" + ", where the variable name is provided by a function."}) public SaveFloat(LongFunction nameFunc) { this.name=null; this.nameFunc = nameFunc; } @Override public Float apply(long value) { HashMap map = SharedState.tl_ObjectMap.get(); String varname=(nameFunc!=null) ? String.valueOf(nameFunc.apply(value)) : name; map.put(varname,value); return (float) value; } }