| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you 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 org.apache.calcite.linq4j; |
| |
| import org.apache.calcite.linq4j.function.BigDecimalFunction1; |
| import org.apache.calcite.linq4j.function.DoubleFunction1; |
| import org.apache.calcite.linq4j.function.EqualityComparer; |
| import org.apache.calcite.linq4j.function.FloatFunction1; |
| import org.apache.calcite.linq4j.function.Function1; |
| import org.apache.calcite.linq4j.function.Function2; |
| import org.apache.calcite.linq4j.function.IntegerFunction1; |
| import org.apache.calcite.linq4j.function.LongFunction1; |
| import org.apache.calcite.linq4j.function.NullableBigDecimalFunction1; |
| import org.apache.calcite.linq4j.function.NullableDoubleFunction1; |
| import org.apache.calcite.linq4j.function.NullableFloatFunction1; |
| import org.apache.calcite.linq4j.function.NullableIntegerFunction1; |
| import org.apache.calcite.linq4j.function.NullableLongFunction1; |
| import org.apache.calcite.linq4j.function.Predicate1; |
| import org.apache.calcite.linq4j.function.Predicate2; |
| import org.apache.calcite.linq4j.tree.FunctionExpression; |
| |
| import java.math.BigDecimal; |
| import java.util.Comparator; |
| |
| /** |
| * Factory for building {@link Queryable} objects. |
| * |
| * @param <T> Element type |
| */ |
| public interface QueryableFactory<T> { |
| |
| /** |
| * Applies an accumulator function over a sequence. |
| */ |
| T aggregate(Queryable<T> source, |
| FunctionExpression<Function2<T, T, T>> selector); |
| |
| /** |
| * Applies an accumulator function over a |
| * sequence. The specified seed value is used as the initial |
| * accumulator value. |
| */ |
| <TAccumulate> TAccumulate aggregate(Queryable<T> source, TAccumulate seed, |
| FunctionExpression<Function2<TAccumulate, T, TAccumulate>> selector); |
| |
| /** |
| * Applies an accumulator function over a |
| * sequence. The specified seed value is used as the initial |
| * accumulator value, and the specified function is used to select |
| * the result value. |
| */ |
| <TAccumulate, TResult> TResult aggregate(Queryable<T> source, |
| TAccumulate seed, |
| FunctionExpression<Function2<TAccumulate, T, TAccumulate>> func, |
| FunctionExpression<Function1<TAccumulate, TResult>> selector); |
| |
| /** |
| * Determines whether all the elements of a sequence |
| * satisfy a condition. |
| */ |
| boolean all(Queryable<T> source, FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Determines whether a sequence contains any |
| * elements. |
| */ |
| boolean any(Queryable<T> source); |
| |
| /** |
| * Determines whether any element of a sequence |
| * satisfies a condition. |
| */ |
| boolean any(Queryable<T> source, FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Computes the average of a sequence of Decimal |
| * values that is obtained by invoking a projection function on |
| * each element of the input sequence. |
| */ |
| BigDecimal averageBigDecimal(Queryable<T> source, |
| FunctionExpression<BigDecimalFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of nullable |
| * Decimal values that is obtained by invoking a projection |
| * function on each element of the input sequence. |
| */ |
| BigDecimal averageNullableBigDecimal(Queryable<T> source, |
| FunctionExpression<NullableBigDecimalFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of Double |
| * values that is obtained by invoking a projection function on |
| * each element of the input sequence. |
| */ |
| double averageDouble(Queryable<T> source, |
| FunctionExpression<DoubleFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of nullable |
| * Double values that is obtained by invoking a projection |
| * function on each element of the input sequence. |
| */ |
| Double averageNullableDouble(Queryable<T> source, |
| FunctionExpression<NullableDoubleFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of int values |
| * that is obtained by invoking a projection function on each |
| * element of the input sequence. |
| */ |
| int averageInteger(Queryable<T> source, |
| FunctionExpression<IntegerFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of nullable |
| * int values that is obtained by invoking a projection function |
| * on each element of the input sequence. |
| */ |
| Integer averageNullableInteger(Queryable<T> source, |
| FunctionExpression<NullableIntegerFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of Float |
| * values that is obtained by invoking a projection function on |
| * each element of the input sequence. |
| */ |
| float averageFloat(Queryable<T> source, |
| FunctionExpression<FloatFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of nullable |
| * Float values that is obtained by invoking a projection |
| * function on each element of the input sequence. |
| */ |
| Float averageNullableFloat(Queryable<T> source, |
| FunctionExpression<NullableFloatFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of long values |
| * that is obtained by invoking a projection function on each |
| * element of the input sequence. |
| */ |
| long averageLong(Queryable<T> source, |
| FunctionExpression<LongFunction1<T>> selector); |
| |
| /** |
| * Computes the average of a sequence of nullable |
| * long values that is obtained by invoking a projection function |
| * on each element of the input sequence. |
| */ |
| Long averageNullableLong(Queryable<T> source, |
| FunctionExpression<NullableLongFunction1<T>> selector); |
| |
| /** |
| * Concatenates two sequences. |
| */ |
| Queryable<T> concat(Queryable<T> source, Enumerable<T> source2); |
| |
| /** |
| * Determines whether a sequence contains a specified |
| * element by using the default equality comparer. |
| */ |
| boolean contains(Queryable<T> source, T element); |
| |
| /** |
| * Determines whether a sequence contains a specified |
| * element by using a specified {@code EqualityComparer<T>}. |
| */ |
| boolean contains(Queryable<T> source, T element, |
| EqualityComparer<T> comparer); |
| |
| /** |
| * Returns the number of elements in a |
| * sequence. |
| */ |
| int count(Queryable<T> source); |
| |
| /** |
| * Returns the number of elements in the specified |
| * sequence that satisfies a condition. |
| */ |
| int count(Queryable<T> source, FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Returns the elements of the specified sequence or |
| * the type parameter's default value in a singleton collection if |
| * the sequence is empty. |
| */ |
| Queryable<T> defaultIfEmpty(Queryable<T> source); |
| |
| /** |
| * Returns the elements of the specified sequence or |
| * the specified value in a singleton collection if the sequence |
| * is empty. |
| */ |
| Queryable<T> defaultIfEmpty(Queryable<T> source, T value); |
| |
| /** |
| * Returns distinct elements from a sequence by using |
| * the default equality comparer to compare values. |
| */ |
| Queryable<T> distinct(Queryable<T> source); |
| |
| /** |
| * Returns distinct elements from a sequence by using |
| * a specified {@code EqualityComparer<T>} to compare values. |
| */ |
| Queryable<T> distinct(Queryable<T> source, EqualityComparer<T> comparer); |
| |
| /** |
| * Returns the element at a specified index in a |
| * sequence. |
| */ |
| T elementAt(Queryable<T> source, int index); |
| |
| /** |
| * Returns the element at a specified index in a |
| * sequence or a default value if the index is out of |
| * range. |
| */ |
| T elementAtOrDefault(Queryable<T> source, int index); |
| |
| /** |
| * Produces the set difference of two sequences by |
| * using the default equality comparer to compare values, |
| * eliminate duplicates. (Defined by Queryable.) |
| */ |
| Queryable<T> except(Queryable<T> source, Enumerable<T> enumerable); |
| |
| /** |
| * Produces the set difference of two sequences by |
| * using the default equality comparer to compare values, |
| * using {@code all} to indicate whether to eliminate duplicates. |
| * (Defined by Queryable.) |
| */ |
| Queryable<T> except(Queryable<T> source, Enumerable<T> enumerable, boolean all); |
| |
| /** |
| * Produces the set difference of two sequences by |
| * using the specified {@code EqualityComparer<T>} to compare |
| * values, eliminate duplicates. |
| */ |
| Queryable<T> except(Queryable<T> source, Enumerable<T> enumerable, |
| EqualityComparer<T> comparer); |
| |
| /** |
| * Produces the set difference of two sequences by |
| * using the specified {@code EqualityComparer<T>} to compare |
| * values, using {@code all} to indicate whether to eliminate duplicates. |
| */ |
| Queryable<T> except(Queryable<T> source, Enumerable<T> enumerable, |
| EqualityComparer<T> comparer, boolean all); |
| |
| /** |
| * Returns the first element of a sequence. (Defined |
| * by Queryable.) |
| */ |
| T first(Queryable<T> source); |
| |
| /** |
| * Returns the first element of a sequence that |
| * satisfies a specified condition. |
| */ |
| T first(Queryable<T> source, FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Returns the first element of a sequence, or a |
| * default value if the sequence contains no elements. |
| */ |
| T firstOrDefault(Queryable<T> source); |
| |
| /** |
| * Returns the first element of a sequence that |
| * satisfies a specified condition or a default value if no such |
| * element is found. |
| */ |
| T firstOrDefault(Queryable<T> source, |
| FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Groups the elements of a sequence according to a |
| * specified key selector function. |
| */ |
| <TKey> Queryable<Grouping<TKey, T>> groupBy(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector); |
| |
| /** |
| * Groups the elements of a sequence according to a |
| * specified key selector function and compares the keys by using |
| * a specified comparer. |
| */ |
| <TKey> Queryable<Grouping<TKey, T>> groupBy(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| EqualityComparer<TKey> comparer); |
| |
| /** |
| * Groups the elements of a sequence according to a |
| * specified key selector function and projects the elements for |
| * each group by using a specified function. |
| */ |
| <TKey, TElement> Queryable<Grouping<TKey, TElement>> groupBy( |
| Queryable<T> source, FunctionExpression<Function1<T, TKey>> keySelector, |
| FunctionExpression<Function1<T, TElement>> elementSelector); |
| |
| /** |
| * Groups the elements of a sequence and projects the |
| * elements for each group by using a specified function. Key |
| * values are compared by using a specified comparer. |
| */ |
| <TKey, TElement> Queryable<Grouping<TKey, TElement>> groupBy( |
| Queryable<T> source, FunctionExpression<Function1<T, TKey>> keySelector, |
| FunctionExpression<Function1<T, TElement>> elementSelector, |
| EqualityComparer<TKey> comparer); |
| |
| /** |
| * Groups the elements of a sequence according to a |
| * specified key selector function and creates a result value from |
| * each group and its key. |
| */ |
| <TKey, TResult> Queryable<TResult> groupByK( |
| Queryable<T> source, FunctionExpression<Function1<T, TKey>> keySelector, |
| FunctionExpression<Function2<TKey, Enumerable<T>, TResult>> resultSelector); |
| |
| /** |
| * Groups the elements of a sequence according to a |
| * specified key selector function and creates a result value from |
| * each group and its key. Keys are compared by using a specified |
| * comparer. |
| */ |
| <TKey, TResult> Queryable<TResult> groupByK(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| FunctionExpression<Function2<TKey, Enumerable<T>, TResult>> resultSelector, |
| EqualityComparer<TKey> comparer); |
| |
| /** |
| * Groups the elements of a sequence according to a |
| * specified key selector function and creates a result value from |
| * each group and its key. The elements of each group are |
| * projected by using a specified function. |
| */ |
| <TKey, TElement, TResult> Queryable<TResult> groupBy(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| FunctionExpression<Function1<T, TElement>> elementSelector, |
| FunctionExpression<Function2<TKey, Enumerable<TElement>, TResult>> resultSelector); |
| |
| /** |
| * Groups the elements of a sequence according to a |
| * specified key selector function and creates a result value from |
| * each group and its key. Keys are compared by using a specified |
| * comparer and the elements of each group are projected by using |
| * a specified function. |
| */ |
| <TKey, TElement, TResult> Queryable<TResult> groupBy(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| FunctionExpression<Function1<T, TElement>> elementSelector, |
| FunctionExpression<Function2<TKey, Enumerable<TElement>, TResult>> resultSelector, |
| EqualityComparer<TKey> comparer); |
| |
| /** |
| * Correlates the elements of two sequences based on |
| * key equality and groups the results. The default equality |
| * comparer is used to compare keys. |
| */ |
| <TInner, TKey, TResult> Queryable<TResult> groupJoin(Queryable<T> source, |
| Enumerable<TInner> inner, |
| FunctionExpression<Function1<T, TKey>> outerKeySelector, |
| FunctionExpression<Function1<TInner, TKey>> innerKeySelector, |
| FunctionExpression<Function2<T, Enumerable<TInner>, TResult>> resultSelector); |
| |
| /** |
| * Correlates the elements of two sequences based on |
| * key equality and groups the results. A specified |
| * EqualityComparer is used to compare keys. |
| */ |
| <TInner, TKey, TResult> Queryable<TResult> groupJoin(Queryable<T> source, |
| Enumerable<TInner> inner, |
| FunctionExpression<Function1<T, TKey>> outerKeySelector, |
| FunctionExpression<Function1<TInner, TKey>> innerKeySelector, |
| FunctionExpression<Function2<T, Enumerable<TInner>, TResult>> resultSelector, |
| EqualityComparer<TKey> comparer); |
| |
| /** |
| * Produces the set intersection of two sequences by |
| * using the default equality comparer to compare values, |
| * eliminate duplicates. (Defined by Queryable.) |
| */ |
| Queryable<T> intersect(Queryable<T> source, Enumerable<T> enumerable); |
| |
| /** |
| * Produces the set intersection of two sequences by |
| * using the default equality comparer to compare values, |
| * using {@code all} to indicate whether to eliminate duplicates. |
| * (Defined by Queryable.) |
| */ |
| Queryable<T> intersect(Queryable<T> source, Enumerable<T> enumerable, boolean all); |
| |
| /** |
| * Produces the set intersection of two sequences by |
| * using the specified EqualityComparer to compare |
| * values, eliminate duplicates. |
| */ |
| Queryable<T> intersect(Queryable<T> source, Enumerable<T> enumerable, |
| EqualityComparer<T> comparer); |
| |
| /** |
| * Produces the set intersection of two sequences by |
| * using the specified EqualityComparer to compare |
| * values, using {@code all} to indicate whether to eliminate duplicates. |
| */ |
| Queryable<T> intersect(Queryable<T> source, Enumerable<T> enumerable, |
| EqualityComparer<T> comparer, boolean all); |
| |
| /** |
| * Correlates the elements of two sequences based on |
| * matching keys. The default equality comparer is used to compare |
| * keys. |
| */ |
| <TInner, TKey, TResult> Queryable<TResult> join(Queryable<T> source, |
| Enumerable<TInner> inner, |
| FunctionExpression<Function1<T, TKey>> outerKeySelector, |
| FunctionExpression<Function1<TInner, TKey>> innerKeySelector, |
| FunctionExpression<Function2<T, TInner, TResult>> resultSelector); |
| |
| /** |
| * Correlates the elements of two sequences based on |
| * matching keys. A specified EqualityComparer is used to |
| * compare keys. |
| */ |
| <TInner, TKey, TResult> Queryable<TResult> join(Queryable<T> source, |
| Enumerable<TInner> inner, |
| FunctionExpression<Function1<T, TKey>> outerKeySelector, |
| FunctionExpression<Function1<TInner, TKey>> innerKeySelector, |
| FunctionExpression<Function2<T, TInner, TResult>> resultSelector, |
| EqualityComparer<TKey> comparer); |
| |
| /** |
| * Returns the last element in a sequence. (Defined |
| * by Queryable.) |
| */ |
| T last(Queryable<T> source); |
| |
| /** |
| * Returns the last element of a sequence that |
| * satisfies a specified condition. |
| */ |
| T last(Queryable<T> source, FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Returns the last element in a sequence, or a |
| * default value if the sequence contains no elements. |
| */ |
| T lastOrDefault(Queryable<T> source); |
| |
| /** |
| * Returns the last element of a sequence that |
| * satisfies a condition or a default value if no such element is |
| * found. |
| */ |
| T lastOrDefault(Queryable<T> source, |
| FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Returns an long that represents the total number |
| * of elements in a sequence. |
| */ |
| long longCount(Queryable<T> source); |
| |
| /** |
| * Returns an long that represents the number of |
| * elements in a sequence that satisfy a condition. |
| */ |
| long longCount(Queryable<T> source, |
| FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Returns the maximum value in a generic |
| * {@code IQueryable<T>}. |
| */ |
| T max(Queryable<T> source); |
| |
| /** |
| * Invokes a projection function on each element of a |
| * generic {@code IQueryable<T>} and returns the maximum resulting |
| * value. |
| */ |
| <TResult extends Comparable<TResult>> TResult max(Queryable<T> source, |
| FunctionExpression<Function1<T, TResult>> selector); |
| |
| /** |
| * Returns the minimum value in a generic |
| * {@code IQueryable<T>}. |
| */ |
| T min(Queryable<T> source); |
| |
| /** |
| * Invokes a projection function on each element of a |
| * generic {@code IQueryable<T>} and returns the minimum resulting |
| * value. |
| */ |
| <TResult extends Comparable<TResult>> TResult min(Queryable<T> source, |
| FunctionExpression<Function1<T, TResult>> selector); |
| |
| /** |
| * Filters the elements of an IQueryable based on a |
| * specified type. |
| */ |
| <TResult> Queryable<TResult> ofType(Queryable<T> source, |
| Class<TResult> clazz); |
| |
| <T2> Queryable<T2> cast(Queryable<T> source, Class<T2> clazz); |
| |
| /** |
| * Sorts the elements of a sequence in ascending |
| * order according to a key. |
| */ |
| <TKey extends Comparable> OrderedQueryable<T> orderBy(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector); |
| |
| /** |
| * Sorts the elements of a sequence in ascending |
| * order by using a specified comparer. |
| */ |
| <TKey> OrderedQueryable<T> orderBy(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| Comparator<TKey> comparator); |
| |
| /** |
| * Sorts the elements of a sequence in descending |
| * order according to a key. |
| */ |
| <TKey extends Comparable> OrderedQueryable<T> orderByDescending( |
| Queryable<T> source, FunctionExpression<Function1<T, TKey>> keySelector); |
| |
| /** |
| * Sorts the elements of a sequence in descending |
| * order by using a specified comparer. |
| */ |
| <TKey> OrderedQueryable<T> orderByDescending(Queryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| Comparator<TKey> comparator); |
| |
| /** |
| * Inverts the order of the elements in a sequence. |
| */ |
| Queryable<T> reverse(Queryable<T> source); |
| |
| /** |
| * Projects each element of a sequence into a new form. |
| */ |
| <TResult> Queryable<TResult> select(Queryable<T> source, |
| FunctionExpression<Function1<T, TResult>> selector); |
| |
| /** |
| * Projects each element of a sequence into a new |
| * form by incorporating the element's index. |
| */ |
| <TResult> Queryable<TResult> selectN(Queryable<T> source, |
| FunctionExpression<Function2<T, Integer, TResult>> selector); |
| |
| |
| /** |
| * Projects each element of a sequence to an |
| * {@code Enumerable<T>} and combines the resulting sequences into one |
| * sequence. |
| */ |
| <TResult> Queryable<TResult> selectMany(Queryable<T> source, |
| FunctionExpression<Function1<T, Enumerable<TResult>>> selector); |
| |
| /** |
| * Projects each element of a sequence to an |
| * {@code Enumerable<T>} and combines the resulting sequences into one |
| * sequence. The index of each source element is used in the |
| * projected form of that element. |
| */ |
| <TResult> Queryable<TResult> selectManyN(Queryable<T> source, |
| FunctionExpression<Function2<T, Integer, Enumerable<TResult>>> selector); |
| |
| /** |
| * Projects each element of a sequence to an |
| * {@code Enumerable<T>} that incorporates the index of the source |
| * element that produced it. A result selector function is invoked |
| * on each element of each intermediate sequence, and the |
| * resulting values are combined into a single, one-dimensional |
| * sequence and returned. |
| */ |
| <TCollection, TResult> Queryable<TResult> selectMany(Queryable<T> source, |
| FunctionExpression<Function2<T, Integer, Enumerable<TCollection>>> |
| collectionSelector, |
| FunctionExpression<Function2<T, TCollection, TResult>> resultSelector); |
| |
| /** |
| * Projects each element of a sequence to an |
| * {@code Enumerable<T>} and invokes a result selector function on each |
| * element therein. The resulting values from each intermediate |
| * sequence are combined into a single, one-dimensional sequence |
| * and returned. |
| */ |
| <TCollection, TResult> Queryable<TResult> selectManyN(Queryable<T> source, |
| FunctionExpression<Function1<T, Enumerable<TCollection>>> |
| collectionSelector, |
| FunctionExpression<Function2<T, TCollection, TResult>> resultSelector); |
| |
| /** |
| * Determines whether two sequences are equal by |
| * using the default equality comparer to compare |
| * elements. |
| */ |
| boolean sequenceEqual(Queryable<T> source, Enumerable<T> enumerable); |
| |
| /** |
| * Determines whether two sequences are equal by |
| * using a specified EqualityComparer to compare |
| * elements. |
| */ |
| boolean sequenceEqual(Queryable<T> source, Enumerable<T> enumerable, |
| EqualityComparer<T> comparer); |
| |
| /** |
| * Returns the only element of a sequence, and throws |
| * an exception if there is not exactly one element in the |
| * sequence. |
| */ |
| T single(Queryable<T> source); |
| |
| /** |
| * Returns the only element of a sequence that |
| * satisfies a specified condition, and throws an exception if |
| * more than one such element exists. |
| */ |
| T single(Queryable<T> source, FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Returns the only element of a sequence, or a |
| * default value if the sequence is empty; this method throws an |
| * exception if there is more than one element in the |
| * sequence. |
| */ |
| T singleOrDefault(Queryable<T> source); |
| |
| /** |
| * Returns the only element of a sequence that |
| * satisfies a specified condition or a default value if no such |
| * element exists; this method throws an exception if more than |
| * one element satisfies the condition. |
| */ |
| T singleOrDefault(Queryable<T> source, |
| FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Bypasses a specified number of elements in a |
| * sequence and then returns the remaining elements. |
| */ |
| Queryable<T> skip(Queryable<T> source, int count); |
| |
| /** |
| * Bypasses elements in a sequence as long as a |
| * specified condition is true and then returns the remaining |
| * elements. |
| */ |
| Queryable<T> skipWhile(Queryable<T> source, |
| FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Bypasses elements in a sequence as long as a |
| * specified condition is true and then returns the remaining |
| * elements. The element's index is used in the logic of the |
| * predicate function. |
| */ |
| Queryable<T> skipWhileN(Queryable<T> source, |
| FunctionExpression<Predicate2<T, Integer>> predicate); |
| |
| /** |
| * Computes the sum of the sequence of Decimal values |
| * that is obtained by invoking a projection function on each |
| * element of the input sequence. |
| */ |
| BigDecimal sumBigDecimal(Queryable<T> source, |
| FunctionExpression<BigDecimalFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of nullable |
| * Decimal values that is obtained by invoking a projection |
| * function on each element of the input sequence. |
| */ |
| BigDecimal sumNullableBigDecimal(Queryable<T> source, |
| FunctionExpression<NullableBigDecimalFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of Double values |
| * that is obtained by invoking a projection function on each |
| * element of the input sequence. |
| */ |
| double sumDouble(Queryable<T> source, |
| FunctionExpression<DoubleFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of nullable |
| * Double values that is obtained by invoking a projection |
| * function on each element of the input sequence. |
| */ |
| Double sumNullableDouble(Queryable<T> source, |
| FunctionExpression<NullableDoubleFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of int values |
| * that is obtained by invoking a projection function on each |
| * element of the input sequence. |
| */ |
| int sumInteger(Queryable<T> source, |
| FunctionExpression<IntegerFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of nullable int |
| * values that is obtained by invoking a projection function on |
| * each element of the input sequence. |
| */ |
| Integer sumNullableInteger(Queryable<T> source, |
| FunctionExpression<NullableIntegerFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of long values |
| * that is obtained by invoking a projection function on each |
| * element of the input sequence. |
| */ |
| long sumLong(Queryable<T> source, |
| FunctionExpression<LongFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of nullable long |
| * values that is obtained by invoking a projection function on |
| * each element of the input sequence. |
| */ |
| Long sumNullableLong(Queryable<T> source, |
| FunctionExpression<NullableLongFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of Float values |
| * that is obtained by invoking a projection function on each |
| * element of the input sequence. |
| */ |
| float sumFloat(Queryable<T> source, |
| FunctionExpression<FloatFunction1<T>> selector); |
| |
| /** |
| * Computes the sum of the sequence of nullable |
| * Float values that is obtained by invoking a projection |
| * function on each element of the input sequence. |
| */ |
| Float sumNullableFloat(Queryable<T> source, |
| FunctionExpression<NullableFloatFunction1<T>> selector); |
| |
| /** |
| * Returns a specified number of contiguous elements |
| * from the start of a sequence. |
| */ |
| Queryable<T> take(Queryable<T> source, int count); |
| |
| /** |
| * Returns elements from a sequence as long as a |
| * specified condition is true. |
| */ |
| Queryable<T> takeWhile(Queryable<T> source, |
| FunctionExpression<Predicate1<T>> predicate); |
| |
| /** |
| * Returns elements from a sequence as long as a |
| * specified condition is true. The element's index is used in the |
| * logic of the predicate function. |
| */ |
| Queryable<T> takeWhileN(Queryable<T> source, |
| FunctionExpression<Predicate2<T, Integer>> predicate); |
| |
| <TKey extends Comparable<TKey>> OrderedQueryable<T> thenBy( |
| OrderedQueryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector); |
| |
| <TKey> OrderedQueryable<T> thenBy(OrderedQueryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| Comparator<TKey> comparator); |
| |
| <TKey extends Comparable<TKey>> OrderedQueryable<T> thenByDescending( |
| OrderedQueryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector); |
| |
| <TKey> OrderedQueryable<T> thenByDescending(OrderedQueryable<T> source, |
| FunctionExpression<Function1<T, TKey>> keySelector, |
| Comparator<TKey> comparator); |
| |
| /** |
| * Produces the set union of two sequences by using |
| * the default equality comparer. |
| */ |
| Queryable<T> union(Queryable<T> source, Enumerable<T> source1); |
| |
| /** |
| * Produces the set union of two sequences by using a |
| * specified {@code EqualityComparer<T>}. |
| */ |
| Queryable<T> union(Queryable<T> source, Enumerable<T> source1, |
| EqualityComparer<T> comparer); |
| |
| /** |
| * Filters a sequence of values based on a |
| * predicate. |
| */ |
| Queryable<T> where(Queryable<T> source, |
| FunctionExpression<? extends Predicate1<T>> predicate); |
| |
| /** |
| * Filters a sequence of values based on a |
| * predicate. Each element's index is used in the logic of the |
| * predicate function. |
| */ |
| Queryable<T> whereN(Queryable<T> source, |
| FunctionExpression<? extends Predicate2<T, Integer>> predicate); |
| |
| /** |
| * Merges two sequences by using the specified |
| * predicate function. |
| */ |
| <T1, TResult> Queryable<TResult> zip(Queryable<T> source, |
| Enumerable<T1> source1, |
| FunctionExpression<Function2<T, T1, TResult>> resultSelector); |
| } |