import com.sun.org.apache.xerces.internal.impl.xs.identity.Field; //导入依赖的package包/类
/** Constructs a value store for the specified identity constraint. */
protected ValueStoreBase(IdentityConstraint identityConstraint) {
    fIdentityConstraint = identityConstraint;
    fFieldCount = fIdentityConstraint.getFieldCount();
    fFields = new Field[fFieldCount];
    fLocalValues = new Object[fFieldCount];
    fLocalValueTypes = new short[fFieldCount];
    fLocalItemValueTypes = new ShortList[fFieldCount];
    for (int i = 0; i < fFieldCount; i++) {
        fFields[i] = fIdentityConstraint.getFieldAt(i);
    }
}
 

import com.sun.org.apache.xerces.internal.impl.xs.identity.Field; //导入依赖的package包/类
/**
 * Request to activate the specified field. This method returns the
 * matcher for the field.
 *
 * @param field The field to activate.
 */
public XPathMatcher activateField(Field field, int initialDepth) {
    ValueStore valueStore =
        fValueStoreCache.getValueStoreFor(field.getIdentityConstraint(), initialDepth);
    setMayMatch(field, Boolean.TRUE);
    XPathMatcher matcher = field.createMatcher(this, valueStore);
    fMatcherStack.addMatcher(matcher);
    matcher.startDocumentFragment();
    return matcher;
}
 

import com.sun.org.apache.xerces.internal.impl.xs.identity.Field; //导入依赖的package包/类
/**
 * Request to activate the specified field. This method returns the
 * matcher for the field.
 *
 * @param field The field to activate.
 */
public XPathMatcher activateField(Field field, int initialDepth) {
    ValueStore valueStore =
        fValueStoreCache.getValueStoreFor(field.getIdentityConstraint(), initialDepth);
    XPathMatcher matcher = field.createMatcher(valueStore);
    fMatcherStack.addMatcher(matcher);
    matcher.startDocumentFragment();
    return matcher;
}
 

import com.sun.org.apache.xerces.internal.impl.xs.identity.Field; //导入依赖的package包/类
/**
 * Sets whether the given field is permitted to match a value.
 * This should be used to catch instance documents that try
 * and match a field several times in the same scope.
 *
 * @param field The field that may be permitted to be matched.
 * @param state Boolean indiciating whether the field may be matched.
 */
public void setMayMatch(Field field, Boolean state) {
    fMayMatchFieldMap.put(field, state);
}
 

import com.sun.org.apache.xerces.internal.impl.xs.identity.Field; //导入依赖的package包/类
/**
 * Returns whether the given field is permitted to match a value.
 *
 * @param field The field that may be permitted to be matched.
 * @return Boolean indicating whether the field may be matched.
 */
public Boolean mayMatch(Field field) {
    return (Boolean) fMayMatchFieldMap.get(field);
}