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SQL: Adds MONTHNAME, DAYNAME and QUARTER functions (elastic#33411)
* Added monthname, dayname and quarter functions * Updated docs tests with the new functions
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70 changes: 70 additions & 0 deletions
70
...org/elasticsearch/xpack/sql/expression/function/scalar/datetime/BaseDateTimeFunction.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License; | ||
| * you may not use this file except in compliance with the Elastic License. | ||
| */ | ||
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| package org.elasticsearch.xpack.sql.expression.function.scalar.datetime; | ||
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| import org.elasticsearch.xpack.sql.expression.Expression; | ||
| import org.elasticsearch.xpack.sql.expression.Expressions; | ||
| import org.elasticsearch.xpack.sql.expression.function.aggregate.AggregateFunctionAttribute; | ||
| import org.elasticsearch.xpack.sql.expression.function.scalar.UnaryScalarFunction; | ||
| import org.elasticsearch.xpack.sql.expression.function.scalar.script.ScriptTemplate; | ||
| import org.elasticsearch.xpack.sql.tree.Location; | ||
| import org.elasticsearch.xpack.sql.tree.NodeInfo; | ||
| import org.elasticsearch.xpack.sql.type.DataType; | ||
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| import java.util.TimeZone; | ||
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| abstract class BaseDateTimeFunction extends UnaryScalarFunction { | ||
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| private final TimeZone timeZone; | ||
| private final String name; | ||
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| BaseDateTimeFunction(Location location, Expression field, TimeZone timeZone) { | ||
| super(location, field); | ||
| this.timeZone = timeZone; | ||
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| StringBuilder sb = new StringBuilder(super.name()); | ||
| // add timezone as last argument | ||
| sb.insert(sb.length() - 1, " [" + timeZone.getID() + "]"); | ||
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| this.name = sb.toString(); | ||
| } | ||
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| @Override | ||
| protected final NodeInfo<BaseDateTimeFunction> info() { | ||
| return NodeInfo.create(this, ctorForInfo(), field(), timeZone()); | ||
| } | ||
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| protected abstract NodeInfo.NodeCtor2<Expression, TimeZone, BaseDateTimeFunction> ctorForInfo(); | ||
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| @Override | ||
| protected TypeResolution resolveType() { | ||
| if (field().dataType() == DataType.DATE) { | ||
| return TypeResolution.TYPE_RESOLVED; | ||
| } | ||
| return new TypeResolution("Function [" + functionName() + "] cannot be applied on a non-date expression ([" | ||
| + Expressions.name(field()) + "] of type [" + field().dataType().esType + "])"); | ||
| } | ||
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| public TimeZone timeZone() { | ||
| return timeZone; | ||
| } | ||
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| @Override | ||
| public String name() { | ||
| return name; | ||
| } | ||
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| @Override | ||
| public boolean foldable() { | ||
| return field().foldable(); | ||
| } | ||
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| @Override | ||
| protected ScriptTemplate asScriptFrom(AggregateFunctionAttribute aggregate) { | ||
| throw new UnsupportedOperationException(); | ||
| } | ||
| } |
59 changes: 59 additions & 0 deletions
59
...rg/elasticsearch/xpack/sql/expression/function/scalar/datetime/BaseDateTimeProcessor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License; | ||
| * you may not use this file except in compliance with the Elastic License. | ||
| */ | ||
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| package org.elasticsearch.xpack.sql.expression.function.scalar.datetime; | ||
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| import org.elasticsearch.common.io.stream.StreamInput; | ||
| import org.elasticsearch.common.io.stream.StreamOutput; | ||
| import org.elasticsearch.xpack.sql.SqlIllegalArgumentException; | ||
| import org.elasticsearch.xpack.sql.expression.function.scalar.processor.runtime.Processor; | ||
| import org.joda.time.ReadableInstant; | ||
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| import java.io.IOException; | ||
| import java.util.TimeZone; | ||
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| public abstract class BaseDateTimeProcessor implements Processor { | ||
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| private final TimeZone timeZone; | ||
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| BaseDateTimeProcessor(TimeZone timeZone) { | ||
| this.timeZone = timeZone; | ||
| } | ||
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| BaseDateTimeProcessor(StreamInput in) throws IOException { | ||
| timeZone = TimeZone.getTimeZone(in.readString()); | ||
| } | ||
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| @Override | ||
| public void writeTo(StreamOutput out) throws IOException { | ||
| out.writeString(timeZone.getID()); | ||
| } | ||
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| TimeZone timeZone() { | ||
| return timeZone; | ||
| } | ||
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| @Override | ||
| public Object process(Object l) { | ||
| if (l == null) { | ||
| return null; | ||
| } | ||
| long millis; | ||
| if (l instanceof String) { | ||
| // 6.4+ | ||
| millis = Long.parseLong(l.toString()); | ||
| } else if (l instanceof ReadableInstant) { | ||
| // 6.3- | ||
| millis = ((ReadableInstant) l).getMillis(); | ||
| } else { | ||
| throw new SqlIllegalArgumentException("A string or a date is required; received {}", l); | ||
| } | ||
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| return doProcess(millis); | ||
| } | ||
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| abstract Object doProcess(long millis); | ||
| } |
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