Support Datetime function CURRENT_DATE & CURRENT_TIME

docs/en/jpql-with-kotlin-jdsl/expressions.md

@@ -223,8 +223,8 @@ Kotlin JDSL provides a series of functions to support built-in functions in JPA.
 
 | Function           | DSL function |
 |--------------------|--------------|
-| CURRENT\_DATE      | not yet      |
-| CURRENT\_TIME      | not yet      |
+| CURRENT\_DATE      | support      |
+| CURRENT\_TIME      | support      |
 | CURRENT\_TIMESTAMP | not yet      |
 | LOCAL DATE         | not yet      |
 | LOCAL TIME         | not yet      |

docs/ko/jpql-with-kotlin-jdsl/expressions.md

@@ -221,8 +221,8 @@ Kotlin JDSL은 JPA에서 제공하는 여러 함수들을 지원하기 위함 
 
 | Function           | DSL function |
 |--------------------|--------------|
-| CURRENT\_DATE      | not yet      |
-| CURRENT\_TIME      | not yet      |
+| CURRENT\_DATE      | support      |
+| CURRENT\_TIME      | support      |
 | CURRENT\_TIMESTAMP | not yet      |
 | LOCAL DATE         | not yet      |
 | LOCAL TIME         | not yet      |

dsl/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/Jpql.kt

@@ -44,6 +44,8 @@ import com.linecorp.kotlinjdsl.querymodel.jpql.select.SelectQuery
 import com.linecorp.kotlinjdsl.querymodel.jpql.sort.Sort
 import java.math.BigDecimal
 import java.math.BigInteger
+import java.time.LocalDate
+import java.time.LocalTime
 import kotlin.internal.Exact
 import kotlin.internal.LowPriorityInOverloadResolution
 import kotlin.reflect.KClass
@@ -486,6 +488,26 @@ open class Jpql : JpqlDsl {
         return Expressions.times(this.toExpression(), value.toExpression())
     }
 
+    /**
+     * Creates an expression that represents  the current date.
+     *
+     * This is the same as ```CURRENT_DATE```.
+     */
+    @SinceJdsl("3.4.0")
+    fun currentDate(): Expression<LocalDate> {
+        return Expressions.currentDate()
+    }
+
+    /**
+     * Creates an expression that represents  the current time.
+     *
+     * This is the same as ```CURRENT_TIME```.
+     */
+    @SinceJdsl("3.4.0")
+    fun currentTime(): Expression<LocalTime> {
+        return Expressions.currentTime()
+    }
+
     /**
      * Creates an expression that represents the divide of values.
      * The values are each enclosed in parentheses.

dsl/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/expression/CurrentDateDslTest.kt

@@ -0,0 +1,40 @@
+package com.linecorp.kotlinjdsl.dsl.jpql.expression
+
+import com.linecorp.kotlinjdsl.dsl.jpql.queryPart
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expression
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expressions
+import org.assertj.core.api.WithAssertions
+import org.junit.jupiter.api.Test
+import java.time.LocalDate
+
+class CurrentDateDslTest : WithAssertions {
+    @Test
+    fun `currentDate() with a property`() {
+        // when
+        val expression = queryPart {
+            currentDate()
+        }.toExpression()
+
+        val actual: Expression<LocalDate> = expression // for type check
+
+        // then
+        val expected = Expressions.currentDate()
+
+        assertThat(actual).isEqualTo(expected)
+    }
+
+    @Test
+    fun `currentDate() with a expression`() {
+        // when
+        val expression = queryPart {
+            currentDate()
+        }.toExpression()
+
+        val actual: Expression<LocalDate> = expression // for type check
+
+        // then
+        val expected = Expressions.currentDate()
+
+        assertThat(actual).isEqualTo(expected)
+    }
+}

dsl/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/dsl/jpql/expression/CurrentTimeDslTest.kt

@@ -0,0 +1,40 @@
+package com.linecorp.kotlinjdsl.dsl.jpql.expression
+
+import com.linecorp.kotlinjdsl.dsl.jpql.queryPart
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expression
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expressions
+import org.assertj.core.api.WithAssertions
+import org.junit.jupiter.api.Test
+import java.time.LocalTime
+
+class CurrentTimeDslTest : WithAssertions {
+    @Test
+    fun `currentDate() with a property`() {
+        // when
+        val expression = queryPart {
+            currentTime()
+        }.toExpression()
+
+        val actual: Expression<LocalTime> = expression // for type check
+
+        // then
+        val expected = Expressions.currentTime()
+
+        assertThat(actual).isEqualTo(expected)
+    }
+
+    @Test
+    fun `currentDate() with a expression`() {
+        // when
+        val expression = queryPart {
+            currentTime()
+        }.toExpression()
+
+        val actual: Expression<LocalTime> = expression // for type check
+
+        // then
+        val expected = Expressions.currentTime()
+
+        assertThat(actual).isEqualTo(expected)
+    }
+}

query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/Expressions.kt

@@ -9,6 +9,7 @@ import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCaseWhen
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCoalesce
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlConcat
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCount
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCurrent
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCustomExpression
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlDivide
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlEntityType
@@ -44,6 +45,8 @@ import com.linecorp.kotlinjdsl.querymodel.jpql.select.SelectQuery
 import com.linecorp.kotlinjdsl.querymodel.jpql.select.impl.JpqlSelectQuery
 import java.math.BigDecimal
 import java.math.BigInteger
+import java.time.LocalDate
+import java.time.LocalTime
 import kotlin.internal.Exact
 import kotlin.reflect.KClass
 
@@ -633,4 +636,20 @@ object Expressions {
     fun <T : Any> parentheses(expr: Expression<T>): Expression<T> {
         return JpqlExpressionParentheses(expr)
     }
+
+    /**
+     * Creates an expression that represents the current date.
+     */
+    @SinceJdsl("3.4.0")
+    fun currentDate(): Expression<LocalDate> {
+        return JpqlCurrent.CurrentDate
+    }
+
+    /**
+     * Creates an expression that represents the current time.
+     */
+    @SinceJdsl("3.4.0")
+    fun currentTime(): Expression<LocalTime> {
+        return JpqlCurrent.CurrentTime
+    }
 }

query-model/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/impl/JpqlCurrent.kt

@@ -0,0 +1,17 @@
+package com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl
+
+import com.linecorp.kotlinjdsl.Internal
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expression
+import java.time.LocalDate
+import java.time.LocalTime
+
+/**
+ * Expression that represents the current date & time.
+ */
+@Internal
+sealed interface JpqlCurrent<T : Any> : Expression<T> {
+
+    object CurrentDate : JpqlCurrent<LocalDate>
+
+    object CurrentTime : JpqlCurrent<LocalTime>
+}

query-model/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/querymodel/jpql/expression/ExpressionsTest.kt

@@ -11,6 +11,7 @@ import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCaseWhen
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCoalesce
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlConcat
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCount
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCurrent
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCustomExpression
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlDivide
 import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlEntityType
@@ -318,6 +319,28 @@ class ExpressionsTest : WithAssertions {
         assertThat(actual).isEqualTo(expected)
     }
 
+    @Test
+    fun currentDate() {
+        // when
+        val actual = Expressions.currentDate()
+
+        // then
+        val expected = JpqlCurrent.CurrentDate
+
+        assertThat(actual).isEqualTo(expected)
+    }
+
+    @Test
+    fun currentTime() {
+        // when
+        val actual = Expressions.currentTime()
+
+        // then
+        val expected = JpqlCurrent.CurrentTime
+
+        assertThat(actual).isEqualTo(expected)
+    }
+
     @Test
     fun div() {
         // when

render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/JpqlRenderContext.kt

@@ -22,6 +22,8 @@ import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlCaseWhenSerialize
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlCoalesceSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlConcatSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlCountSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlCurrentDateSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlCurrentTimeSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlCustomExpressionSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlCustomPredicateSerializer
 import com.linecorp.kotlinjdsl.render.jpql.serializer.impl.JpqlDeleteQuerySerializer
@@ -267,6 +269,8 @@ private class DefaultModule : JpqlRenderModule {
             JpqlCoalesceSerializer(),
             JpqlConcatSerializer(),
             JpqlCountSerializer(),
+            JpqlCurrentDateSerializer(),
+            JpqlCurrentTimeSerializer(),
             JpqlCustomExpressionSerializer(),
             JpqlCustomPredicateSerializer(),
             JpqlDeleteQuerySerializer(),

render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlCurrentDateSerializer.kt

@@ -0,0 +1,26 @@
+package com.linecorp.kotlinjdsl.render.jpql.serializer.impl
+
+import com.linecorp.kotlinjdsl.Internal
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCurrent
+import com.linecorp.kotlinjdsl.render.RenderContext
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlRenderSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlSerializer
+import com.linecorp.kotlinjdsl.render.jpql.writer.JpqlWriter
+import kotlin.reflect.KClass
+
+@Internal
+class JpqlCurrentDateSerializer : JpqlSerializer<JpqlCurrent.CurrentDate> {
+    override fun handledType(): KClass<JpqlCurrent.CurrentDate> {
+        return JpqlCurrent.CurrentDate::class
+    }
+
+    override fun serialize(part: JpqlCurrent.CurrentDate, writer: JpqlWriter, context: RenderContext) {
+        val delegate = context.getValue(JpqlRenderSerializer)
+
+        writer.write("CURRENT_DATE")
+
+        writer.writeParentheses {
+            delegate.serialize(part, writer, context)
+        }
+    }
+}

render/jpql/src/main/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlCurrentTimeSerializer.kt

@@ -0,0 +1,26 @@
+package com.linecorp.kotlinjdsl.render.jpql.serializer.impl
+
+import com.linecorp.kotlinjdsl.Internal
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCurrent
+import com.linecorp.kotlinjdsl.render.RenderContext
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlRenderSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlSerializer
+import com.linecorp.kotlinjdsl.render.jpql.writer.JpqlWriter
+import kotlin.reflect.KClass
+
+@Internal
+class JpqlCurrentTimeSerializer : JpqlSerializer<JpqlCurrent.CurrentTime> {
+    override fun handledType(): KClass<JpqlCurrent.CurrentTime> {
+        return JpqlCurrent.CurrentTime::class
+    }
+
+    override fun serialize(part: JpqlCurrent.CurrentTime, writer: JpqlWriter, context: RenderContext) {
+        val delegate = context.getValue(JpqlRenderSerializer)
+
+        writer.write("CURRENT_TIME")
+
+        writer.writeParentheses {
+            delegate.serialize(part, writer, context)
+        }
+    }
+}

render/jpql/src/test/kotlin/com/linecorp/kotlinjdsl/render/jpql/serializer/impl/JpqlCurrentDateSerializerTest.kt

@@ -0,0 +1,52 @@
+package com.linecorp.kotlinjdsl.render.jpql.serializer.impl
+
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expressions
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.Expressions.currentDate
+import com.linecorp.kotlinjdsl.querymodel.jpql.expression.impl.JpqlCurrent
+import com.linecorp.kotlinjdsl.render.TestRenderContext
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlRenderSerializer
+import com.linecorp.kotlinjdsl.render.jpql.serializer.JpqlSerializerTest
+import com.linecorp.kotlinjdsl.render.jpql.writer.JpqlWriter
+import io.mockk.impl.annotations.MockK
+import io.mockk.verifySequence
+import org.assertj.core.api.WithAssertions
+import org.junit.jupiter.api.Test
+
+@JpqlSerializerTest
+class JpqlCurrentDateSerializerTest : WithAssertions {
+
+    private val sut = JpqlCurrentDateSerializer()
+
+    @MockK
+    private lateinit var writer: JpqlWriter
+
+    @MockK
+    private lateinit var serializer: JpqlRenderSerializer
+
+    private val expression = currentDate()
+
+    @Test
+    fun handledType() { // when
+        val actual = sut.handledType()
+
+        // then
+        assertThat(actual).isEqualTo(JpqlCurrent.CurrentDate::class)
+    }
+
+    @Test
+    fun serialize() {
+        // given
+        val part = Expressions.currentDate()
+        val context = TestRenderContext(serializer)
+
+        // when
+        sut.serialize(part as JpqlCurrent.CurrentDate, writer, context)
+
+        // then
+        verifySequence {
+            writer.write("CURRENT_DATE")
+            writer.writeParentheses(any())
+            serializer.serialize(expression, writer, context)
+        }
+    }
+}