#919 - io.ebean package initial

src/main/java/io/ebeaninternal/api/HashQueryPlan.java

@@ -0,0 +1,54 @@
+package io.ebeaninternal.api;
+
+/**
+ * A hash for a query plan.
+ */
+public class HashQueryPlan {
+
+  private final String rawSql;
+
+  private final int planHash;
+
+  private final int bindCount;
+
+  public HashQueryPlan(String rawSql, int planHash, int bindCount) {
+    this.rawSql = rawSql;
+    this.planHash = planHash;
+    this.bindCount = bindCount;
+  }
+
+  public String toString() {
+    return planHash + ":" + bindCount + (rawSql != null ? ":r" : "");
+  }
+
+  /**
+   * Return as a partial key. For rawSql hash the sql is part of the key and as such
+   * needs to be included in order to have a complete key. Typically the MD5 of the sql
+   * can be used as a shot form proxy for the actual sql.
+   */
+  public String getPartialKey() {
+    return planHash + "_" + bindCount;
+  }
+
+  public int hashCode() {
+    int hc = planHash;
+    hc = hc * 92821 + bindCount;
+    hc = hc * 92821 + (rawSql == null ? 0 : rawSql.hashCode());
+    return hc;
+  }
+
+  public boolean equals(Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof HashQueryPlan)) {
+      return false;
+    }
+
+    HashQueryPlan e = (HashQueryPlan) obj;
+    //noinspection StringEquality
+    return e.planHash == planHash
+      && e.bindCount == bindCount
+      && ((e.rawSql == rawSql) || (e.rawSql != null && e.rawSql.equals(rawSql)));
+  }
+}