adds SqlBuilder

Author: slowcoders

hyperquery/src/main/antlr/org/slowcoders/hql/parser/Selection.g4

@@ -0,0 +1,68 @@
+grammar Selection;
+
+/* =======================
+ * Parser rules
+ * ======================= */
+expr
+    : (macroInvocation
+    | mapperParameter
+    | property
+    | tuple
+    | trivia
+    | string
+    | atom)+
+    ;
+
+macroInvocation
+    : property tuple
+    ;
+
+mapperParameter
+    : '#{' Identifier ('.' Identifier)* '}'
+    ;
+
+property
+    : PropertyLiteral
+    ;
+
+trivia
+    : Tribia
+    ;
+
+tuple
+    : '(' expr (',' expr)* ')'
+    ;
+
+atom
+    : Identifier
+    ;
+
+string
+    : StringLiteral
+    ;
+
+/* =======================
+ * Lexer rules
+ * ======================= */
+
+PropertyLiteral
+    : Alias '.' Identifier
+    ;
+
+Alias
+    : '@' | ('@' Identifier)+
+    ;
+
+Identifier
+    : [a-zA-Z_][a-zA-Z0-9_]*
+    ;
+
+Tribia
+    : ~[a-zA-Z,?@()]+
+    ;
+
+StringLiteral
+    : '"' ( ~["\\] | '\\' . )* '"'
+    | '\'' ( ~['\\] | '\\' . )* '\''
+    ;
+

hyperquery/src/main/java/org/slowcoders/hyperquery/core/QFilter.java

@@ -1,7 +1,7 @@
 package org.slowcoders.hyperquery.core;
 
-import org.slowcoders.hyperquery.impl.HSchema;
 import org.slowcoders.hyperquery.impl.QCriteria;
+import org.slowcoders.hyperquery.impl.SqlBuilder;
 
 import java.lang.annotation.Repeatable;
 import java.lang.annotation.Retention;
@@ -49,21 +49,4 @@ public class QFilter<T extends QEntity<?>> {
         }
     }
 
-    //==============================================================================//
-
-    private String __sql__;
-
-    /*internal*/ public final void setSql(String sql) {
-        this.__sql__ = sql;
-    }
-
-    public QCriteria buildCriteria() {
-        return QCriteria.buildCriteria(this, "@");
-    }
-
-
-    public String toString() {
-        QCriteria criteria = buildCriteria();
-        return criteria.toString();
-    }
 }

hyperquery/src/main/java/org/slowcoders/hyperquery/impl/ColumnMapping.java

@@ -0,0 +1,11 @@
+package org.slowcoders.hyperquery.impl;
+
+class ColumnMapping {
+    final String columnName;
+    final String fieldName;
+
+    public ColumnMapping(String columnName, String fieldName) {
+        this.columnName = columnName;
+        this.fieldName = fieldName;
+    }
+}

hyperquery/src/main/java/org/slowcoders/hyperquery/impl/CriteriaBuilder.java

@@ -1,6 +1,15 @@
 package org.slowcoders.hyperquery.impl;
 
+import jakarta.persistence.Column;
+import org.slowcoders.hyperquery.core.QColumn;
+import org.slowcoders.hyperquery.core.QEntity;
 import org.slowcoders.hyperquery.core.QJoin;
+import org.slowcoders.hyperquery.core.QRecord;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.ParameterizedType;
+import java.lang.reflect.Type;
+import java.util.Collection;
 
 public abstract class HModel {
 
@@ -13,8 +22,8 @@ public void initialize() {
 
     protected abstract String getTableName();
 
-    protected String translateProperty(String property) {
-        return property;
+    protected QAttribute getAttribute(String property) {
+        return null;
     }
 
     protected QJoin getJoin(String alias) {
@@ -24,4 +33,44 @@ protected QJoin getJoin(String alias) {
     protected QLambda getLambda(String alias) {
         return null;
     }
+
+    static Class<? extends QRecord<?>> getElementType(Field f) {
+        if (f.getType().isArray()) return (Class<? extends QRecord<?>>) f.getType().getComponentType();
+
+        Type type = f.getGenericType();
+        if (type instanceof ParameterizedType) {
+            ParameterizedType pType = (ParameterizedType) type;
+            Type[] typeArguments = pType.getActualTypeArguments();
+            if (typeArguments.length > 0 && typeArguments[0] instanceof Class) {
+                return (Class<? extends QRecord<?>>) typeArguments[0];
+            }
+        }
+        return (Class<? extends QRecord<?>>) f.getType();
+    }
+
+    static class Helper implements QEntity<Helper> {
+        static String getColumnName(Field f) {
+            QColumn anno = f.getAnnotation(QColumn.class);
+            if (anno != null) return anno.value();
+
+            PKColumn pk = f.getAnnotation(PKColumn.class);
+            if (pk != null) return pk.value();
+
+            TColumn tcol = f.getAnnotation(TColumn.class);
+            if (tcol != null) return tcol.value();
+
+            Column col = f.getAnnotation(Column.class);
+            if (col != null) return col.name();
+
+            return null;
+        }
+
+        public static boolean isUniqueKey(Field f) {
+            return f.getAnnotation(PKColumn.class) != null;
+        }
+
+        public static boolean isCollectionType(Field f) {
+            return f.getType().isArray() || Collection.class.isAssignableFrom(f.getType());
+        }
+    }
 }