本文整理了Java中org.eclipse.persistence.internal.expressions.QueryKeyExpression.shouldQueryToManyRelationship方法的一些代码示例，展示了QueryKeyExpression.shouldQueryToManyRelationship的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。QueryKeyExpression.shouldQueryToManyRelationship方法的具体详情如下：
包路径：org.eclipse.persistence.internal.expressions.QueryKeyExpression
类名称：QueryKeyExpression
方法名：shouldQueryToManyRelationship

QueryKeyExpression.shouldQueryToManyRelationship介绍

[英]Is this a query across a 1:many or many:many relationship. Does not apply to attributes.
[中]

代码示例

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * INTERNAL:
 * Indicates that RelationExpression.normalize method shouldn't attempt
 * optimize normalization by not normalizing this.
 */
public boolean isNormalizationRequired() {
  return shouldQueryToManyRelationship() ||
    
    // For bug 2718460, some QueryKeyExpressions have a query key but no mapping.
    // An example is the "back-ref" query key for batch reads.  Must not
    // attempt the optimization for these.
    getMapping() == null ||
    
    // For bug 5234283: WRONG =* SQL FOR LEFT JOIN ON DERBY AND DB2 PLATFORMS
    // Caused by QueryKeyExpression never been normilized.
    // The condition should be kept in sync with condtions in normalize method
    // that trigger adding to normalizer.getStatement().getOuterJoin...
    ((shouldUseOuterJoin() || isUsingOuterJoinForMultitableInheritance()) && !getSession().getPlatform().shouldPrintOuterJoinInWhereClause()) ||
    (shouldUseOuterJoin() && getSession().getPlatform().isInformixOuterJoin());
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

public void iterate(Expression expression) {
    if (expression.isQueryKeyExpression() && ((QueryKeyExpression)expression).shouldQueryToManyRelationship()) {
      // Aggregate should only use distinct as specified by the user.
      if (!isDistinctComputed()) {
        useDistinct();
      }
    }
  }
};

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

@Override
  public void iterate(Expression expression) {
    if (expression.isQueryKeyExpression() && ((QueryKeyExpression)expression).shouldQueryToManyRelationship()) {
      // Aggregate should only use distinct as specified by the user.
      if (!isDistinctComputed()) {
        useDistinct();
      }
    }
  }
};

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

public void iterate(Expression expression) {
    if (expression.isQueryKeyExpression() && ((QueryKeyExpression)expression).shouldQueryToManyRelationship()) {
      // Aggregate should only use distinct as specified by the user.
      if (!isDistinctComputed()) {
        useDistinct();
      }
    }
  }
};

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * INTERNAL:
 * Return if the expression is equal to the other.
 * This is used to allow dynamic expression's SQL to be cached.
 */
public boolean equals(Object object) {
  if (this == object) {
    return true;
  }
  if (!super.equals(object)) {
    return false;
  }
  QueryKeyExpression expression = (QueryKeyExpression) object;        
  // Return false for anyOf expressions, as equality is unknown.
  if (shouldQueryToManyRelationship() || expression.shouldQueryToManyRelationship()) {
    return false;
  }
  return ((getName() == expression.getName()) || ((getName() != null) && getName().equals(expression.getName())));
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

/**
 * INTERNAL:
 * Return if the expression is equal to the other.
 * This is used to allow dynamic expression's SQL to be cached.
 */
@Override
public boolean equals(Object object) {
  if (this == object) {
    return true;
  }
  if (!super.equals(object)) {
    return false;
  }
  QueryKeyExpression expression = (QueryKeyExpression) object;
  // Return false for anyOf expressions, as equality is unknown.
  if (shouldQueryToManyRelationship() || expression.shouldQueryToManyRelationship()) {
    return false;
  }
  return ((getName() == expression.getName()) || ((getName() != null) && getName().equals(expression.getName())));
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * INTERNAL:
 * Return if the expression is equal to the other.
 * This is used to allow dynamic expression's SQL to be cached.
 */
@Override
public boolean equals(Object object) {
  if (this == object) {
    return true;
  }
  if (!super.equals(object)) {
    return false;
  }
  QueryKeyExpression expression = (QueryKeyExpression) object;        
  // Return false for anyOf expressions, as equality is unknown.
  if (shouldQueryToManyRelationship() || expression.shouldQueryToManyRelationship()) {
    return false;
  }
  return ((getName() == expression.getName()) || ((getName() != null) && getName().equals(expression.getName())));
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

/**
 * INTERNAL:
 * Print java for project class generation
 */
@Override
public void printJava(ExpressionJavaPrinter printer) {
  this.baseExpression.printJava(printer);
  if (!shouldUseOuterJoin()) {
    if (!shouldQueryToManyRelationship()) {
      printer.printString(".get(");
    } else {
      printer.printString(".anyOf(");
    }
  } else {
    if (!shouldQueryToManyRelationship()) {
      printer.printString(".getAllowingNull(");
    } else {
      printer.printString(".anyOfAllowingNone(");
    }
  }
  printer.printString("\"" + getName() + "\")");
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * INTERNAL:
 * Print java for project class generation
 */
@Override
public void printJava(ExpressionJavaPrinter printer) {
  this.baseExpression.printJava(printer);
  if (!shouldUseOuterJoin()) {
    if (!shouldQueryToManyRelationship()) {
      printer.printString(".get(");
    } else {
      printer.printString(".anyOf(");
    }
  } else {
    if (!shouldQueryToManyRelationship()) {
      printer.printString(".getAllowingNull(");
    } else {
      printer.printString(".anyOfAllowingNone(");
    }
  }
  printer.printString("\"" + getName() + "\")");
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * INTERNAL:
 * Print java for project class generation
 */
public void printJava(ExpressionJavaPrinter printer) {
  getBaseExpression().printJava(printer);
  if (!shouldUseOuterJoin()) {
    if (!shouldQueryToManyRelationship()) {
      printer.printString(".get(");
    } else {
      printer.printString(".anyOf(");
    }
  } else {
    if (!shouldQueryToManyRelationship()) {
      printer.printString(".getAllowingNull(");
    } else {
      printer.printString(".anyOfAllowingNone(");
    }
  }
  printer.printString("\"" + getName() + "\")");
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * INTERNAL:
 */
public Vector getOwnedTables() {
  if ((getMapping() != null) && getMapping().isNestedTableMapping()) {
    Vector nestedTable = null;
    if (shouldQueryToManyRelationship()) {
      nestedTable = (Vector)super.getOwnedTables().clone();
    } else {
      nestedTable = new Vector(1);
    }
    nestedTable.addElement(new NestedTable(this));
    return nestedTable;
  }
  if ((getMapping() != null) && (getMapping().isReferenceMapping() || getMapping().isStructureMapping())) {
    return null;
  }
  return super.getOwnedTables();
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

/**
 * INTERNAL:
 */
@Override
public List<DatabaseTable> getOwnedTables() {
  if ((getMapping() != null) && getMapping().isNestedTableMapping()) {
    List<DatabaseTable> nestedTable = null;
    if (shouldQueryToManyRelationship()) {
      nestedTable = new ArrayList(super.getOwnedTables());
    } else {
      nestedTable = new ArrayList(1);
    }
    nestedTable.add(new NestedTable(this));
    return nestedTable;
  }
  if ((getMapping() != null) && (getMapping().isReferenceMapping() || getMapping().isStructureMapping())) {
    return null;
  }
  return super.getOwnedTables();
}

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

/**
 * INTERNAL:
 */
@Override
public List<DatabaseTable> getOwnedTables() {
  if ((getMapping() != null) && getMapping().isNestedTableMapping()) {
    List<DatabaseTable> nestedTable = null;
    if (shouldQueryToManyRelationship()) {
      nestedTable = new ArrayList(super.getOwnedTables());
    } else {
      nestedTable = new ArrayList(1);
    }
    nestedTable.add(new NestedTable(this));
    return nestedTable;
  }
  if ((getMapping() != null) && (getMapping().isReferenceMapping() || getMapping().isStructureMapping())) {
    return null;
  }
  return super.getOwnedTables();
}

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

if ((!shouldQueryToManyRelationship()) && qkIsToMany && (!isNestedMapping)) {
  throw QueryException.invalidUseOfToManyQueryKeyInExpression(theOneThatsNotNull);
if (shouldQueryToManyRelationship() && !qkIsToMany) {
  throw QueryException.invalidUseOfAnyOfInExpression(theOneThatsNotNull);

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

if ((!shouldQueryToManyRelationship()) && qkIsToMany && (!isNestedMapping)) {
  throw QueryException.invalidUseOfToManyQueryKeyInExpression(theOneThatsNotNull);
if (shouldQueryToManyRelationship() && !qkIsToMany) {
  throw QueryException.invalidUseOfAnyOfInExpression(theOneThatsNotNull);

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

/**
 * Validate and prepare the join expression.
 */
protected void prepareJoinExpression(Expression expression, AbstractSession session) {
  // Must be query key expression.
  if (!expression.isQueryKeyExpression()) {
    throw QueryException.mappingForExpressionDoesNotSupportJoining(expression);
  }
  QueryKeyExpression objectExpression = (QueryKeyExpression)expression;
  // Expression may not have been initialized.
  objectExpression.getBuilder().setSession(session.getRootSession(null));
  if (objectExpression.getBuilder().getQueryClass() == null){
    objectExpression.getBuilder().setQueryClass(this.descriptor.getJavaClass());
  }
  // Can only join relationships.
  if ((objectExpression.getMapping() == null) || (!objectExpression.getMapping().isJoiningSupported())) {
    throw QueryException.mappingForExpressionDoesNotSupportJoining(objectExpression);
  }
  // Search if any of the expression traverse a 1-m.
  ObjectExpression baseExpression = objectExpression;
  while (!baseExpression.isExpressionBuilder()) {
    if (((QueryKeyExpression)baseExpression).shouldQueryToManyRelationship()) {
      setIsToManyJoinQuery(true);
    }
    if (baseExpression.shouldUseOuterJoin()) {
      setIsOuterJoinedAttributeQuery(true);
    }
    baseExpression = (ObjectExpression)baseExpression.getBaseExpression();
  }
}

代码示例来源：origin: org.eclipse.persistence/com.springsource.org.eclipse.persistence

if ((!shouldQueryToManyRelationship()) && qkIsToMany && (!isNestedMapping)) {
  throw QueryException.invalidUseOfToManyQueryKeyInExpression(theOneThatsNotNull);
if (shouldQueryToManyRelationship() && !qkIsToMany) {
  throw QueryException.invalidUseOfAnyOfInExpression(theOneThatsNotNull);

代码示例来源：origin: com.haulmont.thirdparty/eclipselink

if (((QueryKeyExpression)baseExpression).shouldQueryToManyRelationship()) {
  setIsToManyJoinQuery(true);

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

if (((QueryKeyExpression)expression).shouldQueryToManyRelationship()) {
  getJoinedAttributeManager().setIsToManyJoinQuery(true);

代码示例来源：origin: org.eclipse.persistence/org.eclipse.persistence.core

if (((QueryKeyExpression)baseExpression).shouldQueryToManyRelationship()) {
  setIsToManyJoinQuery(true);