Develop

.github/workflows/main.yml

@@ -20,10 +20,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - name: Set up JDK 11
+    - name: Set up JDK 17
       uses: actions/setup-java@v3
       with:
-        java-version: '11'
+        java-version: '17'
         distribution: 'temurin'
     - name: Build & Scan Project
       env:
@@ -44,7 +44,7 @@ jobs:
     - name: Set up JDK 11
       uses: actions/setup-java@v3
       with:
-        java-version: '11'
+        java-version: '17'
         distribution: 'temurin'
         server-id: ossrh
         server-username: MAVEN_USERNAME

pom.xml

@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>io.github.oneteme</groupId>
 	<artifactId>jquery</artifactId>
-	<version>3.0.0</version>
+	<version>4.0.0-SNAPSHOT</version>
 	<packaging>jar</packaging>
 	<name>java-query</name>
 	<description>java-query</description>
@@ -26,7 +26,7 @@
 		</license>
 	</licenses>
 	<properties>
-		<java.version>11</java.version>
+		<java.version>17</java.version>
 		<junit.version>5.8.1</junit.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
@@ -39,13 +39,13 @@
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
-			<version>1.18.22</version>
+			<version>1.18.32</version>
 			<scope>provided</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.25</version>
+			<version>1.7.36</version>
 			<scope>provided</scope>
 		</dependency>
 		<dependency>

src/main/java/org/usf/jquery/core/DBExpression.java → src/main/java/org/usf/jquery/core/AggregateFunction.java

@@ -6,6 +6,6 @@
  *
  */
 @FunctionalInterface
-public interface DBExpression extends DBObject {
+public interface AggregateFunction extends FunctionOperator {
 
-}
+}

src/main/java/org/usf/jquery/core/ArgTypeRef.java

@@ -0,0 +1,20 @@
+package org.usf.jquery.core;
+
+import static org.usf.jquery.core.JDBCType.typeOf;
+import static org.usf.jquery.core.Validation.requireAtLeastNArgs;
+
+import java.util.function.Function;
+
+/**
+ * 
+ * @author u$f
+ *
+ */
+@FunctionalInterface
+interface ArgTypeRef extends Function<Object[], JDBCType> {
+
+	static ArgTypeRef firstArgJdbcType() {
+		return arr-> typeOf(requireAtLeastNArgs(1, arr, ArgTypeRef.class::getSimpleName)[0])
+				.orElse(null);
+	} 
+}

src/main/java/org/usf/jquery/core/ArithmeticOperator.java

@@ -0,0 +1,22 @@
+package org.usf.jquery.core;
+
+import static org.usf.jquery.core.Validation.requireNArgs;
+
+/**
+ * 
+ * @author u$f
+ *
+ */
+@FunctionalInterface
+public interface ArithmeticOperator extends Operator {
+
+	@Override
+	default void sql(SqlStringBuilder sb, QueryContext ctx, Object[] args) {
+		requireNArgs(2, args, ArithmeticException.class::getSimpleName);
+		sb.parenthesis(()->{
+			ctx.appendLiteral(sb, args[0]); 
+			sb.append(id());
+			ctx.appendLiteral(sb, args[1]);
+		});
+	}
+}

src/main/java/org/usf/jquery/core/AsciiResultMapper.java

@@ -34,7 +34,7 @@
  */
 @Slf4j
 @RequiredArgsConstructor
-public final class AsciiResultMapper implements ResultMapper<Void> {
+public final class AsciiResultMapper implements ResultSetMapper<Void> {
 
 	private static final int MAX_LENGTH = 50;
 
@@ -87,27 +87,17 @@ public Void map(ResultSet rs) throws SQLException {
 			}
 			writer.writeLine(div);
 		} catch (IOException e) {
-            throw new RuntimeException("error while mapping results", e);
+            throw new MappingException("error writing results", e);
 		}
 		log.info("{} rows mapped in {} ms", rw, currentTimeMillis() - bg);
 		return null;
 	}
 
 	private static boolean isNumer(int type) {
-		switch (type) {
-		case BOOLEAN:
-		case BIT:
-		case TINYINT:
-		case SMALLINT:
-		case INTEGER:
-		case BIGINT:
-		case REAL:
-		case FLOAT:
-		case DOUBLE:
-		case NUMERIC:
-		case DECIMAL: return true;
-		default: return false;
-		}
+		return switch (type) {
+		case BOOLEAN, BIT, TINYINT, SMALLINT, INTEGER, BIGINT, REAL, FLOAT, DOUBLE, NUMERIC, DECIMAL: yield true;
+		default: yield false;
+		};
 	}
 
 	private static Object[] array(int size, String v) {

src/main/java/org/usf/jquery/core/BadArgumentException.java

@@ -0,0 +1,42 @@
+package org.usf.jquery.core;
+
+import static java.lang.String.format;
+import static org.usf.jquery.core.SqlStringBuilder.SCOMA;
+import static org.usf.jquery.core.Utils.joinAndDelemitArray;
+import static org.usf.jquery.core.Utils.joinArray;
+
+import org.usf.jquery.core.JavaType.Typed;
+
+/**
+ * 
+ * @author u$f
+ *
+ */
+@SuppressWarnings("serial")
+public final class BadArgumentException extends JQueryException {
+
+	public BadArgumentException(String message) {
+		super(message);
+	}
+
+	public BadArgumentException(String message, Throwable cause) {
+		super(message, cause);
+	}
+
+	public static BadArgumentException badArgumentCountException(int count, int expect) {
+		return new BadArgumentException(format("bad argument count: [%d], expected: %d", count, expect));
+	}
+
+	public static BadArgumentException badArgumentTypeException(Object obj, JavaType[] types) {
+		var type = obj instanceof Typed t ? t.getType() : JDBCType.typeOf(obj);
+		return new BadArgumentException(format("bad argument type: %s[%s], expected: %s", obj, type, joinArray("|", types)));
+	}
+
+	public static BadArgumentException badArgumentsException(String type, String id, Object[] args, Exception e) {
+		return new BadArgumentException(format("bad %s arguments: ", type) + badArgumentsFormat(id, args), e);
+	}
+
+	public static String badArgumentsFormat(String id, Object... args) {
+		return id + joinAndDelemitArray(SCOMA, "([", "])", args);
+	}
+}

src/main/java/org/usf/jquery/core/BasicComparator.java

@@ -8,17 +8,13 @@
  *
  */
 @FunctionalInterface
-public interface BasicComparator extends DBComparator {
-
-	String symbol();
+public interface BasicComparator extends Comparator {
 
 	@Override
-	default String sql(QueryParameterBuilder builder, Object[] args) {
+	default void sql(SqlStringBuilder sb, QueryContext ctx, Object[] args) {
 		requireNArgs(2, args, BasicComparator.class::getSimpleName);
-		return builder.appendParameter(args[0]) + symbol() + builder.appendParameter(args[1]);
-	}
-
-	static BasicComparator basicComparator(final String name) {
-		return ()-> name;
+		ctx.appendParameter(sb, args[0]);
+		sb.append(id());
+		ctx.appendParameter(sb, args[1]);
 	}
 }

src/main/java/org/usf/jquery/core/CaseColumn.java

@@ -1,50 +1,51 @@
 package org.usf.jquery.core;
 
-import static java.util.stream.Collectors.joining;
-import static org.usf.jquery.core.QueryParameterBuilder.addWithValue;
 import static org.usf.jquery.core.SqlStringBuilder.SPACE;
+import static org.usf.jquery.core.Validation.requireAtLeastNArgs;
 
-import java.util.Collection;
-import java.util.LinkedList;
-
-import lombok.AccessLevel;
-import lombok.RequiredArgsConstructor;
+import java.util.Objects;
+import java.util.function.Consumer;
+import java.util.stream.Stream;
 
 /**
  * 
  * @author u$f
  *
  */
-@RequiredArgsConstructor(access = AccessLevel.PACKAGE)
 public final class CaseColumn implements DBColumn {
 
-	private final Collection<WhenExpression> expressions = new LinkedList<>();
+	private final WhenCase[] whenCases;
 
+	CaseColumn(WhenCase[] whenCases) {
+		this.whenCases = requireAtLeastNArgs(1, whenCases, CaseColumn.class::getSimpleName);
+	}
+
 	@Override
-	public String sql(QueryParameterBuilder builder) {
-		builder.forceValue(true); //add filters as value
-		try {
-			return expressions.stream()
-			.map(o-> o.sql(builder))
-			.collect(joining(SPACE, "CASE ", " END"));
-		}
-		finally {
-			builder.forceValue(false);
-		}
+	public void sql(SqlStringBuilder sb, QueryContext ctx) {
+		var sub = ctx.withValue(); //force literal parameter
+		sb.runForeach(whenCases, SPACE, o-> o.sql(sb, sub), "CASE ", " END");
 	}
-
-	public CaseColumn append(WhenExpression we) {
-		expressions.add(we);
-		return this;
+
+	@Override
+	public JDBCType getType() {
+		return Stream.of(whenCases)
+				.map(WhenCase::getType)
+				.filter(Objects::nonNull) // should have same type
+				.findAny().orElse(null);
 	}
 
 	@Override
-	public String toString() {
-		return sql(addWithValue());
+	public int columns(QueryBuilder builder, Consumer<? super DBColumn> groupKeys) {
+		return Nested.resolveColumn(this, builder, groupKeys, whenCases);
 	}
-
-	public static CaseColumn caseWhen(DBFilter filter, Object value){
-		return new CaseColumn()
-				.append(new WhenExpression(filter, value));
+
+	@Override
+	public void views(Consumer<DBView> cons) {
+		Nested.resolveViews(cons, whenCases);
+	}
+
+	@Override
+	public String toString() {
+		return DBObject.toSQL(this);
 	}
 }