Added support for subselects

Author: sgflt

pom.xml

@@ -118,4 +118,4 @@
     </plugins>
   </build>
 
-</project>
+</project>

…c/main/java/eu/qwsome/sql/InnerJoin.java …n/java/eu/qwsome/sql/InnerTableJoin.javasrc/main/java/eu/qwsome/sql/InnerJoin.java renamed to src/main/java/eu/qwsome/sql/InnerTableJoin.java src/main/java/eu/qwsome/sql/InnerJoin.java renamed to src/main/java/eu/qwsome/sql/InnerTableJoin.java

@@ -7,14 +7,14 @@
  *
  * @author Lukáš Kvídera
  */
-class InnerJoin extends Join {
+class InnerTableJoin extends TableJoin {
 
-  InnerJoin(final String joinTable, final Condition condition) {
+  InnerTableJoin(final String joinTable, final Condition condition) {
     super(joinTable, condition);
   }
 
   @Override
   CharSequence getPrefix() {
     return "";
   }
-}
+}

src/main/java/eu/qwsome/sql/Join.java

@@ -1,64 +1,11 @@
 package eu.qwsome.sql;
 
 import eu.qwsome.sql.api.Appendable;
-import eu.qwsome.sql.condition.Condition;
 import eu.qwsome.sql.condition.ValueConstructor;
 
 /**
- * Crate for join attributes.
- *
  * @author Lukáš Kvídera
  */
-abstract class Join implements Appendable {
-
-  /**
-   * Table used in JOIN clause.
-   */
-  private final String joinTable;
-
-  /**
-   * Condition in ON clause.
-   */
-  private final Condition condition;
-
-  Join(final String joinTable, final Condition condition) {
-    this.joinTable = joinTable;
-    this.condition = condition;
-  }
-
-  public CharSequence get() {
-    final StringBuilder builder = new StringBuilder();
-    appendTo(builder);
-    return builder;
-  }
-
-  /**
-   * @return tyoe if join
-   */
-  abstract CharSequence getPrefix();
-
-  @Override
-  public void appendTo(final StringBuilder builder) {
-    builder.append(getPrefix())
-      .append(" JOIN ")
-      .append(this.joinTable)
-      .append(" ON ");
-
-    this.condition.appendTo(builder);
-  }
-
-  /**
-   * @return variables to be bound in ON clause's conditions
-   */
-  ValueConstructor toValues() {
-    return this.condition.getValues();
-  }
-
-  /**
-   * This enum determines type of join.
-   */
-  enum Type {
-    LEFT,
-    INNER
-  }
-}
+interface Join extends Appendable {
+  ValueConstructor toValues();
+}

src/main/java/eu/qwsome/sql/LeftJoin.java …in/java/eu/qwsome/sql/LeftTableJoin.javasrc/main/java/eu/qwsome/sql/LeftJoin.java renamed to src/main/java/eu/qwsome/sql/LeftTableJoin.java src/main/java/eu/qwsome/sql/LeftJoin.java renamed to src/main/java/eu/qwsome/sql/LeftTableJoin.java

@@ -7,14 +7,14 @@
  *
  * @author Lukáš Kvídera
  */
-class LeftJoin extends Join {
+class LeftTableJoin extends TableJoin {
 
-  LeftJoin(final String joinTable, final Condition condition) {
+  LeftTableJoin(final String joinTable, final Condition condition) {
     super(joinTable, condition);
   }
 
   @Override
   CharSequence getPrefix() {
     return " LEFT";
   }
-}
+}