39 lines
983 B
Java
39 lines
983 B
Java
package it.cavallium.dbengine.lucene;
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/**
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* <pre>y = (x * factor) + firstPageLimit</pre>
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*/
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public class LinearPageLimits implements PageLimits {
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private static final double DEFAULT_FACTOR = 0.5d;
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private final double factor;
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private final double firstPageLimit;
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private final double maxItemsPerPage;
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public LinearPageLimits() {
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this(DEFAULT_FACTOR, DEFAULT_MIN_ITEMS_PER_PAGE);
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}
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public LinearPageLimits(double factor) {
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this(factor, DEFAULT_MIN_ITEMS_PER_PAGE);
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}
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public LinearPageLimits(double factor, int firstPageLimit) {
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this(factor, firstPageLimit, DEFAULT_MAX_ITEMS_PER_PAGE);
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}
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public LinearPageLimits(double factor, int firstPageLimit, int maxItemsPerPage) {
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this.factor = factor;
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this.firstPageLimit = firstPageLimit;
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this.maxItemsPerPage = maxItemsPerPage;
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}
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@Override
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public int getPageLimit(int pageIndex) {
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double min = Math.min(maxItemsPerPage, firstPageLimit + (pageIndex * factor));
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assert min > 0d;
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return (int) min;
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}
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}
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