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Add Interval implementation of InlineExpressionParser SPI
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| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!-- | ||
| ~ 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. | ||
| --> | ||
|
|
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| <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <modelVersion>4.0.0</modelVersion> | ||
| <parent> | ||
| <groupId>org.apache.shardingsphere</groupId> | ||
| <artifactId>shardingsphere-infra-expr-type</artifactId> | ||
| <version>5.4.2-SNAPSHOT</version> | ||
| </parent> | ||
| <artifactId>shardingsphere-infra-expr-interval</artifactId> | ||
| <name>${project.artifactId}</name> | ||
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| <dependencies> | ||
| <dependency> | ||
| <groupId>org.apache.shardingsphere</groupId> | ||
| <artifactId>shardingsphere-infra-expr-spi</artifactId> | ||
| <version>${project.version}</version> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>org.apache.shardingsphere</groupId> | ||
| <artifactId>shardingsphere-test-util</artifactId> | ||
| <version>${project.version}</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
| </dependencies> | ||
| </project> |
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...in/java/org/apache/shardingsphere/infra/expr/interval/IntervalInlineExpressionParser.java
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| /* | ||
| * 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. | ||
| */ | ||
|
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| package org.apache.shardingsphere.infra.expr.interval; | ||
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| import com.google.common.base.Strings; | ||
| import org.apache.shardingsphere.infra.exception.core.ShardingSpherePreconditions; | ||
| import org.apache.shardingsphere.infra.exception.core.external.sql.type.generic.UnsupportedSQLOperationException; | ||
| import org.apache.shardingsphere.infra.expr.spi.InlineExpressionParser; | ||
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| import java.time.LocalDate; | ||
| import java.time.LocalDateTime; | ||
| import java.time.LocalTime; | ||
| import java.time.Month; | ||
| import java.time.Year; | ||
| import java.time.YearMonth; | ||
| import java.time.format.DateTimeFormatter; | ||
| import java.time.format.DateTimeParseException; | ||
| import java.time.temporal.ChronoField; | ||
| import java.time.temporal.ChronoUnit; | ||
| import java.time.temporal.Temporal; | ||
| import java.time.temporal.TemporalAccessor; | ||
| import java.util.Arrays; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Properties; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.LongStream; | ||
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| /** | ||
| * Interval inline expression parser. | ||
| */ | ||
| public class IntervalInlineExpressionParser implements InlineExpressionParser { | ||
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| /** | ||
| * Abbreviation for prefix. | ||
| */ | ||
| private static final String PREFIX_KEY = "P"; | ||
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| /** | ||
| * Abbreviation for suffix pattern. | ||
| */ | ||
| private static final String SUFFIX_PATTERN_KEY = "SP"; | ||
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| /** | ||
| * Abbreviation for datetime interval amount. | ||
| */ | ||
| private static final String INTERVAL_AMOUNT_KEY = "DIA"; | ||
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| /** | ||
| * Abbreviation for datetime interval unit. | ||
| */ | ||
| private static final String INTERVAL_UNIT_KEY = "DIU"; | ||
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| /** | ||
| * Abbreviation for datetime lower. | ||
| */ | ||
| private static final String DATE_TIME_LOWER_KEY = "DL"; | ||
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| /** | ||
| * Abbreviation for datetime upper. | ||
| */ | ||
| private static final String DATE_TIME_UPPER_KEY = "DU"; | ||
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| private TemporalAccessor startTime; | ||
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| private TemporalAccessor endTime; | ||
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| private String prefix; | ||
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| private DateTimeFormatter dateTimeFormatterForSuffixPattern; | ||
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| private int stepAmount; | ||
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| private ChronoUnit stepUnit; | ||
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| private String inlineExpression; | ||
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| @Override | ||
| public void init(final Properties props) { | ||
| inlineExpression = props.getProperty(INLINE_EXPRESSION_KEY); | ||
| Map<String, String> propsMap = Arrays.stream(inlineExpression.split(";")) | ||
| .collect(Collectors.toMap(string -> string.split("=")[0], string -> string.split("=")[1])); | ||
| prefix = getPrefix(propsMap); | ||
| dateTimeFormatterForSuffixPattern = getSuffixPattern(propsMap); | ||
| startTime = getDateTimeLower(propsMap); | ||
| endTime = getDateTimeUpper(propsMap); | ||
| stepAmount = Integer.parseInt(propsMap.getOrDefault(INTERVAL_AMOUNT_KEY, "1")); | ||
| stepUnit = propsMap.containsKey(INTERVAL_UNIT_KEY) ? getStepUnit(propsMap.get(INTERVAL_UNIT_KEY)) : ChronoUnit.DAYS; | ||
| } | ||
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| @Override | ||
| public String handlePlaceHolder() { | ||
| return inlineExpression; | ||
| } | ||
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| @Override | ||
| public List<String> splitAndEvaluate() { | ||
| return Strings.isNullOrEmpty(inlineExpression) ? Collections.emptyList() : split(); | ||
| } | ||
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| private String getPrefix(final Map<String, String> props) { | ||
| ShardingSpherePreconditions.checkState(props.containsKey(PREFIX_KEY), | ||
| () -> new RuntimeException(String.format("%s can not be null.", PREFIX_KEY))); | ||
| return props.get(PREFIX_KEY); | ||
| } | ||
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| private TemporalAccessor getDateTimeLower(final Map<String, String> props) { | ||
| ShardingSpherePreconditions.checkState(props.containsKey(DATE_TIME_LOWER_KEY), | ||
| () -> new RuntimeException(String.format("%s can not be null.", DATE_TIME_LOWER_KEY))); | ||
| return getDateTime(props.get(DATE_TIME_LOWER_KEY)); | ||
| } | ||
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| private TemporalAccessor getDateTimeUpper(final Map<String, String> props) { | ||
| ShardingSpherePreconditions.checkState(props.containsKey(DATE_TIME_UPPER_KEY), | ||
| () -> new RuntimeException(String.format("%s can not be null.", DATE_TIME_UPPER_KEY))); | ||
| return getDateTime(props.get(DATE_TIME_UPPER_KEY)); | ||
| } | ||
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| private TemporalAccessor getDateTime(final String dateTimeValue) { | ||
| try { | ||
| return dateTimeFormatterForSuffixPattern.parse(dateTimeValue); | ||
| } catch (final DateTimeParseException dateTimeParseException) { | ||
| throw new RuntimeException(dateTimeParseException); | ||
| } | ||
| } | ||
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| private DateTimeFormatter getSuffixPattern(final Map<String, String> props) { | ||
| String suffix = props.get(SUFFIX_PATTERN_KEY); | ||
| ShardingSpherePreconditions.checkState(!Strings.isNullOrEmpty(suffix), | ||
| () -> new RuntimeException(String.format("%s can not be null or empty.", SUFFIX_PATTERN_KEY))); | ||
| return DateTimeFormatter.ofPattern(suffix); | ||
| } | ||
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| private ChronoUnit getStepUnit(final String stepUnit) { | ||
| return Arrays.stream(ChronoUnit.values()) | ||
| .filter(chronoUnit -> chronoUnit.toString().equalsIgnoreCase(stepUnit)) | ||
| .findFirst() | ||
| .orElseThrow(() -> new UnsupportedSQLOperationException(String.format("Cannot find step unit for specified %s property: `%s`", INTERVAL_UNIT_KEY, stepUnit))); | ||
| } | ||
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| private List<String> split() { | ||
| TemporalAccessor calculateTime = startTime; | ||
| if (!calculateTime.isSupported(ChronoField.NANO_OF_DAY)) { | ||
| if (calculateTime.isSupported(ChronoField.EPOCH_DAY)) { | ||
| return convertStringFromTemporal(startTime.query(LocalDate::from), endTime.query(LocalDate::from)); | ||
| } | ||
| if (calculateTime.isSupported(ChronoField.YEAR) && calculateTime.isSupported(ChronoField.MONTH_OF_YEAR)) { | ||
| return convertStringFromTemporal(startTime.query(YearMonth::from), endTime.query(YearMonth::from)); | ||
| } | ||
| if (calculateTime.isSupported(ChronoField.YEAR)) { | ||
| return convertStringFromTemporal(startTime.query(Year::from), endTime.query(Year::from)); | ||
| } | ||
| if (calculateTime.isSupported(ChronoField.MONTH_OF_YEAR)) { | ||
| return convertStringFromMonth(); | ||
| } | ||
| } | ||
| if (!calculateTime.isSupported(ChronoField.EPOCH_DAY)) { | ||
| return convertStringFromTemporal(startTime.query(LocalTime::from), endTime.query(LocalTime::from)); | ||
| } | ||
| return convertStringFromTemporal(startTime.query(LocalDateTime::from), endTime.query(LocalDateTime::from)); | ||
| } | ||
|
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| private List<String> convertStringFromMonth() { | ||
| Month startTimeAsMonth = startTime.query(Month::from); | ||
| Month endTimeAsMonth = endTime.query(Month::from); | ||
| return LongStream.iterate(0, x -> x + stepAmount) | ||
| .limit((endTimeAsMonth.getValue() - startTimeAsMonth.getValue()) / stepAmount + 1) | ||
| .parallel() | ||
| .boxed() | ||
| .map(startTimeAsMonth::plus) | ||
| .map(dateTimeFormatterForSuffixPattern::format) | ||
| .map(suffix -> prefix + suffix) | ||
| .collect(Collectors.toList()); | ||
| } | ||
|
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| private List<String> convertStringFromTemporal(final Temporal startTimeAsTemporal, final Temporal endTimeAsTemporal) { | ||
| return LongStream.iterate(0, x -> x + stepAmount) | ||
| .limit(stepUnit.between(startTimeAsTemporal, endTimeAsTemporal) / stepAmount + 1) | ||
| .parallel() | ||
| .boxed() | ||
| .map(arithmeticSequence -> startTimeAsTemporal.plus(arithmeticSequence, stepUnit)) | ||
| .map(dateTimeFormatterForSuffixPattern::format) | ||
| .map(suffix -> prefix + suffix) | ||
| .collect(Collectors.toList()); | ||
| } | ||
|
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| @Override | ||
| public String getType() { | ||
| return "INTERVAL"; | ||
| } | ||
| } |
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